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93-464: The initial core of the website was the mountain, road and trail databases. In 2009, a project was begun to upgrade the road and trail database, taking advantage of the newer air photos currently available via Google Earth. This has resulted in numerous corrections to previous data based on government maps. Roads and trails were classified and color coded according to their current conditions reported by about 7000 road bulletins written by eyewitness users of

186-452: A topographic map . However, when the key col is far away, or when one wants to calculate the prominence of many peaks at once, software can apply surface network modeling to a digital elevation model to find exact or approximate key cols. Since topographic maps typically show elevation using contour lines , the exact elevation is typically bounded by an upper and lower contour, and not specified exactly. Prominence calculations may use

279-601: A tourist activity. There are different activities associated with the sport. Mountaineering lacks formal rules – though appropriately empowered bodies make many pertaining to specific use of mountains and practices on them. In theory, any person may climb a mountain and call themself a mountaineer. In practice, the sport is defined by the safe and necessary use of technical skills in mountainous terrain: in particular, roped climbing and snow travel abilities. A variety of techniques have been developed to help people climb mountains that are widely applied among practitioners of

372-409: A "base camp," which is an area used for staging attempts at nearby summits. Base camps are positioned to be relatively safe from harsh terrain and weather. Where the summit cannot be reached from base camp in a single day, a mountain will have additional camps above base camp. For popular mountains, base camps may be at a fixed location and become famous. The Everest base camps and Camp Muir are among

465-420: A "closer" peak than the encirclement parent (if there is one), which is still "better" than the peak in question. The differences lie in what criteria are used to define "closer" and "better." The (prominence) parent peak of peak A can be found by dividing the island or region in question into territories, by tracing the two hydrographic runoffs, one in each direction, downwards from the key col of every peak that

558-494: A "hierarchy" of peaks going back to the highest point on the island. One such chain in Britain would read: Billinge Hill → Winter Hill → Hail Storm Hill → Boulsworth Hill → Kinder Scout → Cross Fell → Helvellyn → Scafell Pike → Snowdon → Ben Nevis . At each stage in the chain, both height and prominence increase. Line parentage, also called height parentage, is similar to prominence parentage, but it requires

651-407: A climber who ascends the rock. The first climber, called the leader , will reach a point on the rock and then build an anchor , which will secure subsequent climbers. Anchors could be created by using slings around a tree or boulder, or by using protection devices like cams and nuts . Once anchored, the leader will then belay the climber coming up from below. Once the follower reaches the leader,

744-424: A cutoff to form a list of peaks ranked by elevation is standard and is the most common use of the concept, it is also possible to use prominence as a mountain measure in itself. This generates lists of peaks ranked by prominence , which are qualitatively different from lists ranked by elevation. Such lists tend to emphasize isolated high peaks, such as range or island high points and stratovolcanoes . One advantage of

837-589: A distance of 17,755 km (11,032 miles), as well as the parent of the South Summit of Mount Everest at a distance of 360 m (1200 feet). The key col may also be close to the subject peak or far from it. The key col for Aconcagua, if sea level is disregarded, is the Bering Strait at a distance of 13,655 km (8,485 miles). The key col for the South Summit of Mount Everest

930-426: A few different forms of shelter depending on the situation and conditions; alpine shelters or arctic shelters. Shelter is a very important aspect of safety for the climber as weather in the mountains may be very unpredictable. Tall mountains may require many days of camping. Short trips lasting less than a day generally do not require shelter, although for safety, most mountaineers will carry an emergency shelter, such

1023-494: A given landmass, the highest peak's prominence will be identical to its elevation. An alternative equivalent definition is that the prominence is the height of the peak's summit above the lowest contour line encircling it, but containing no higher summit within it; see Figure 1. The parent peak may be either close or far from the subject peak. The summit of Mount Everest is the parent peak of Aconcagua in Argentina at

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1116-408: A great deal of information about the peak's position. In general, the analysis of parents and lineages is intimately linked to studying the topology of watersheds . Alteration of the landscape by humans and presence of water features can give rise to issues in the choice of location and height of a summit or col. In Britain, extensive discussion has resulted in a protocol that has been adopted by

1209-485: A hierarchy which defines some peaks as subpeaks of others. For example, in Figure ;1, the middle peak is a subpeak of the right peak, which is a subpeak of the left peak, which is the highest point on its landmass. In that example, there is no controversy about the hierarchy; in practice, there are different definitions of parent. These different definitions follow. Also known as prominence island parentage , this

1302-418: A highest submerged col of about 40 m, or only 8888 m below the peak of Everest. As a result, Mauna Kea's prominence might be subjectively more impressive than Everest's, and some authorities have called it the tallest mountain from peak to underwater base. Dry prominence is also useful for measuring submerged seamounts . Seamounts have a dry topographic prominence, a topographic isolation , and

1395-559: A large body of professional guides, equipment, and methodologies. In the early years of the " golden age ", scientific pursuits were intermixed with the sport, such as by the physicist John Tyndall . In the later years, it shifted to a more competitive orientation as pure sportsmen came to dominate the London-based Alpine Club and alpine mountaineering overall. The first president of the Alpine Club, John Ball ,

1488-401: A light bivouac sack . Typical shelters used for camping include tents and bivouac sacks . The ability of these shelters to provide protection from the elements is dependent on their design. Mountaineers who climb in areas with cold weather or snow and ice will use more heavy-duty shelters than those who climb in more forgiving environments. In remote locations, mountaineers will set up

1581-707: A means of payment. In the UK the term "hut" is used for any cottage or cabin used as a base for walkers or climbers. These are mostly owned by mountaineering clubs for use by members or visiting clubs and generally do not have wardens or permanent staff, but have cooking and washing facilities and heating. In the Scottish Highlands small simple unstaffed shelters without cooking facilities known as "bothies" are maintained to break up cross country long routes and act as base camps to certain mountains. Where conditions permit, snow caves are another way to shelter high on

1674-579: A negative topographic elevation . Prominence values are accurate to perhaps 100m owing to uncertainties in ocean sounding depths. Mountaineering Mountaineering , mountain climbing , or alpinism is a set of outdoor activities that involves ascending mountains . Mountaineering-related activities include traditional outdoor climbing , skiing , and traversing via ferratas that have become sports in their own right. Indoor climbing , sport climbing , and bouldering are also considered variants of mountaineering by some, but are part of

1767-409: A prominence cutoff criterion. The height parent is the closest peak to peak A (along all ridges connected to A) that has a greater height than A, and satisfies some prominence criteria. The disadvantage of this concept is that it goes against the intuition that a parent peak should always be more significant than its child. However it can be used to build an entire lineage for a peak which contains

1860-437: A prominence-ranked list is that it needs no cutoff since a peak with high prominence is automatically an independent peak. It is common to define a peak's parent as a particular peak in the higher terrain connected to the peak by the key col. If there are many higher peaks there are various ways of defining which one is the parent, not necessarily based on geological or geomorphological factors. The "parent" relationship defines

1953-413: A rope team. For example, when traveling over glaciers , crevasses pose a grave danger to a climber who is not roped in. These giant cracks in the ice are not always visible as snow can be blown and freeze over the top to make a snowbridge . At times snowbridges can be as thin as a few inches and may collapse from people walking over them. Should a climber fall, being protected by a rope greatly reduces

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2046-405: A roped team may choose not to use anchors; instead, all members of the team will prepare to use their ice axes to self-arrest in the event should a team member fall. It is not always wise for climbers to form a rope team, since one falling climber may pull the entire team off the mountain. However, the risks of individual, unprotected travel are often so great that groups have no choice but to form

2139-495: A variety of hazards . When climbing mountains, there are two types of hazards, objective (mountain-based) and subjective (human-based) . Objective hazards relate to the environment, and may include inclement weather conditions, dangerous terrain, duration of exposure , and other environmental conditions. Subjective hazards relate to a climber's poor judgement, poor planning, lack of skills, faulty analysis and conclusions, or inadequate conditioning. In terms of objective hazards,

2232-535: A voluntary basis by members of alpine clubs. The manager of the hut, termed a guardian or warden in Europe, will usually also sell refreshments and meals, both to those visiting only for the day and to those staying overnight. The offering is surprisingly wide, given that most supplies, often including fresh water, must be flown in by helicopter, and may include glucose-based snacks (such as candy bars) on which climbers and walkers wish to stock up, cakes and pastries made at

2325-537: A wide group of mountain sports . Unlike most sports, mountaineering lacks widely applied formal rules, regulations, and governance; mountaineers adhere to a large variety of techniques and philosophies (including grading and guidebooks ) when climbing mountains. Numerous local alpine clubs support mountaineers by hosting resources and social activities. A federation of alpine clubs, the International Climbing and Mountaineering Federation (UIAA),

2418-464: A young generation of Norwegian mountaineers such as George Paus , Eilert Sundt and Kristian Tandberg appeared, and later founded Norsk Tindeklub , the third oldest mountaineering association in the world. By the turn of the 20th century, mountaineering had acquired a more international flavour. In 1897 Mount Saint Elias (18,008 ft (5,489 m)) on the Alaska - Yukon border was summitted by

2511-484: Is Aconcagua (6,960 m), in Argentina , and its prominence is 6,138 m. (To further illustrate the rising-sea model of prominence, if sea level rose 56 m, North and South America would be separate continents and Denali would be 6138 m, its current prominence, above sea level. At a slightly lower level, the continents would still be connected and the high point of the combined landmass would be Aconcagua,

2604-417: Is about 100 m (330 feet) distant. A way to visualize prominence is to imagine raising sea level so the parent peak and subject peak are two separate islands. Then lower it until a tiny land bridge forms between the two islands. This land bridge is the key col of the subject peak, and the peak's prominence is its elevation from that key col. Prominence is interesting to many mountaineers because it

2697-435: Is also a prerequisite of success in all aspects of mountaineering. Alpine rock climbing involves technical skills including the ability to place anchors into the rock to safely ascend a mountain. In some cases, climbers may have to climb multiple pitches of rock to reach the top. Typically, for any one pitch, there is a belayer who is stationary and creates tension on the rope to catch a climber should he or she fall, and

2790-439: Is an objective measurement that is strongly correlated with the subjective significance of a summit. Peaks with low prominence are either subsidiary tops of some higher summit or relatively insignificant independent summits. Peaks with high prominence tend to be the highest points around and are likely to have extraordinary views. Only summits with a sufficient degree of prominence are regarded as independent mountains. For example,

2883-441: Is at least four feet of snow. The addition of a good quality bivouac bag and closed cell foam sleeping mat will also increase the warmth of the snow cave. Another shelter that works well is a quinzee , which is excavated from a pile of snow that has been work hardened or sintered (typically by stomping). Igloos are used by some climbers, but are deceptively difficult to build and require specific snow conditions. Mountaineers face

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2976-443: Is becoming preferred. There are two varieties of topographic prominence: wet prominence and dry prominence. Wet prominence is the standard topographic prominence discussed in this article. Wet prominence assumes that the surface of the earth includes all permanent water, snow, and ice features. Thus, the wet prominence of the highest summit of an ocean island or landmass is always equal to the summit's elevation. Dry prominence, on

3069-510: Is considered to be the discoverer of the Dolomites , which for decades were the focus of climbers like Paul Grohmann and Angelo Dibona . At that time, the edelweiss also established itself as a symbol of alpinists and mountaineers. In the 19th century, the focus of mountaineering turned towards mountains beyond the Alps. One of the earliest mountain areas to be explored beyond the Alps in

3162-442: Is deemed obligatory, and in many cases is essential as some popular huts, even with more than 100 bed spaces, may be full during good weather and at weekends. Once made, the cancellation of a reservation is advised as a matter of courtesy – and, indeed, potentially of safety, as many huts keep a record of where climbers and walkers state they plan to walk to next. Most huts may be contacted by telephone and most take credit cards as

3255-406: Is defined as follows. In Figure 2 the key col of peak A is at the meeting place of two closed contours, one encircling A (and no higher peaks) and the other containing at least one higher peak. The encirclement parent of A is the highest peak that is inside this other contour. In terms of the falling-sea model, the two contours together bound an "island", with two pieces connected by an isthmus at

3348-404: Is equal to its wet prominence (4205 m) plus the depth of its highest submerged col (about 5125 m). Totaling 9330 m, this is greater than any mountain apart from Everest. The dry prominence of Aconcagua is equal to its wet prominence (6960 m) plus the depth of the highest submerged col of the Bering Strait (about 40 m), or about 7000 m. It is worth noting Mauna Kea

3441-560: Is equal to its wet prominence plus the depth of its highest submerged col. Because Earth has no higher summit than Mount Everest , Everest's prominence is either undefined or its height from the lowest contour line. In a dry Earth, the lowest contour line would be the deepest hydrologic feature, the Challenger Deep , at 10,924 m depth. Everest's dry prominence would be this depth plus Everest's wet prominence of 8848 m, totaling 19,772 m. The dry prominence of Mauna Kea

3534-406: Is more prominent than peak A. The parent is the peak whose territory peak A is in. For hills with low prominence in Britain, a definition of "parent Marilyn " is sometimes used to classify low hills ("Marilyn" being a British term for a hill with a prominence of at least 150 m). This is found by dividing the region of Britain in question into territories, one for each Marilyn . The parent Marilyn

3627-457: Is not used because there is no obvious choice of cutoff. This choice of method might at first seem arbitrary, but it provides every hill with a clear and unambiguous parent peak that is taller and more prominent than the hill itself, while also being connected to it (via ridge lines). The parent of a low hill will also usually be nearby; this becomes less likely as the hill's height and prominence increase. Using prominence parentage, one may produce

3720-590: Is relatively close to its submerged key col in the Pacific Ocean, and the corresponding contour line that surrounds Mauna Kea is a relatively compact area of the ocean floor. Whereas a contour line around Everest that is lower than 9330m from Everest's peak would surround most of the major continents of the Earth. Even just surrounding Afro-Eurasia would run a contour line through the Bering Straight, with

3813-764: Is the International Olympic Committee -recognized world organization for mountaineering and climbing. The consequences of mountaineering on the natural environment can be seen in terms of individual components of the environment (land relief, soil, vegetation, fauna, and landscape) and the location/zone of mountaineering activity (hiking, trekking, or climbing zone). Mountaineering impacts communities on economic, political, social and cultural levels, often leading to changes in people's worldviews influenced by globalization, specifically foreign cultures and lifestyles. Humans have been present in mountains since prehistory. The remains of Ötzi , who lived in

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3906-508: Is the 1100 AD ascent of the Untersberg . The famous poet Petrarch describes his 26 April 1336 ascent of Mount Ventoux (1,912 m (6,273 ft)) in one of his epistolae familiares , claiming to be inspired by Philip V of Macedon 's ascent of Mount Haemo . For most of antiquity, climbing mountains was a practical or symbolic activity, usually undertaken for economic, political, or religious purposes. A commonly cited example

3999-456: Is the 1492 ascent of Mont Aiguille (2,085 m (6,841 ft)) by Antoine de Ville, a French military officer and lord of Domjulien and Beaupré. Because ropes, ladders and iron hooks were used, and because it was the first climb of any technical difficulty to be officially verified, this ascent is widely recognized as being the birth of mountaineering. Conrad Gessner , A mid-16th Century physician, botanist and naturalist from Switzerland,

4092-694: Is the Marilyn whose territory the hill's summit is in. If the hill is on an island (in Britain) whose highest point is less than 150 m, it has no parent Marilyn. Prominence parentage is the only definition used in the British Isles because encirclement parentage breaks down when the key col approaches sea level. Using the encirclement definition, the parent of almost any small hill in a low-lying coastal area would be Ben Nevis , an unhelpful and confusing outcome. Meanwhile, "height" parentage (see below)

4185-402: Is used to describe terrain in which no technical equipment is needed. To traverse this terrain, mountaineers hike long distances to a base camp or the beginning of rough terrain, either following trails or using navigation techniques to travel cross-country. Hiking may be a strenuous activity, and adequate physical fitness and familiarity with the wilderness is necessary to complete a hike; it

4278-650: Is widely recognized as being the first person to hike and climb for sheer pleasure. In the Andes , around the late 1400s and early 1500s many ascents were made of extremely high peaks by the Incas and their subjects. The highest they are known for certain to have climbed is 6739 m at the summit of Volcan Llullaillaco . The Age of Enlightenment and the Romantic era marked a change of attitudes towards high mountains. In 1757 Swiss scientist Horace-Bénédict de Saussure made

4371-470: The 4th millennium BC , were found in a glacier in the Ötztal Alps . However, the highest mountains were rarely visited early on, and were often associated with supernatural or religious concepts. Nonetheless, there are many documented examples of people climbing mountains prior to the formal development of the sport in the 19th century, although many of these stories are sometimes considered fictional or legendary. A rare medieval example of mountaineering

4464-770: The Duke of the Abruzzi and party. In 1879–1880 the exploration of the highest Andes in South America began when English mountaineer Edward Whymper climbed Chimborazo (20,549 ft (6,263 m)) and explored the mountains of Ecuador. It took until the late 19th century for European explorers to penetrate Africa. Mount Kilimanjaro in Africa was climbed in 1889 by Austrian mountaineer Ludwig Purtscheller and German geologist Hans Meyer , Mount Kenya in 1899 by Halford Mackinder . The greatest mountain range to be conquered

4557-794: The French Federation of Mountaineering and Climbing , remain independent. The premier award in mountaineering is the privately granted Piolet d'Or , which has expanded from a single recognition to multiple. While there are many competitions, particularly in toproped climbing wall disciplines, there are no "official" world championships or other similar competitions for mountaineering broadly. Mountaineering techniques vary greatly depending on location, season, terrain, and route. Both techniques and hazards vary by terrain, spanning trails, rock, snow, and ice. Mountaineers must possess adequate food, water, information, equipment, stamina, and skill to complete their tasks. The term "walk-up" or "trek"

4650-579: The Golden Age of Alpinism , with the first mountaineering club – the Alpine Club – being founded in 1857. One of the most dramatic events was the spectacular first ascent of the Matterhorn in 1865 by a party led by English illustrator Edward Whymper , in which four of the party members fell to their deaths. By this point the sport of mountaineering had largely reached its modern form, with

4743-840: The Grossglockner in 1800, the Ortler in 1804, the Jungfrau in 1811, the Finsteraarhorn in 1812, and the Breithorn in 1813. In 1808, Marie Paradis became the first woman to climb Mont Blanc, followed in 1838 by Henriette d'Angeville . The beginning of mountaineering as a sport in the UK is generally dated to the ascent of the Wetterhorn in 1854 by English mountaineer Sir Alfred Wills , who made mountaineering fashionable in Britain. This inaugurated what became known as

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4836-521: The vasodilator padutin , and a stimulant tea made from coca leaves. K2 (8,611m), the second-highest peak in the world, was first scaled in 1954 by Lino Lacedelli and Achille Compagnoni . In 1964, the final eight-thousander to be climbed was Shishapangma (8,013m), the lowest of all the 8,000-metre peaks. Reinhold Messner from the Dolomites mountain range (Italy) was then the first to climb all eight-thousanders up to 1986, in addition to being

4929-525: The 19th century were the mountains of Norway —particularly Jotunheimen —where British mountaineers such as William Cecil Slingsby , Harold Raeburn and Howard Priestman were early pioneers. Slingsby's book Norway, the Northern Playground contributed greatly to the popularization of mountaineering in Norway among the international mountaineering community. Around the turn of the century,

5022-466: The U.S., 2000 ft (610 m) of prominence has become an informal threshold that signifies that a peak has major stature. Lists with a high topographic prominence cutoff tend to favor isolated peaks or those that are the highest point of their massif ; a low value, such as the Nuttalls', results in a list with many summits that may be viewed by some as insignificant. While the use of prominence as

5115-464: The bottom of a mountaineer's boots and provide additional traction on hard snow and ice. For loose snow, crampons are less suitable, and snowshoes or skis may be preferred. Using various techniques from alpine skiing to ascend/descend a mountain is a form of the sport by itself, called ski mountaineering . Ascending and descending a steep snow slope safely requires the use of an ice axe and different footwork techniques that have been developed over

5208-735: The cataloging was completed in 2003 and from then on, a steady trickle of updates were made as errors were reported. In 2012, a major project was begun to systematically recheck every peak, now plotted on the newer mapping systems of the website. This article about an organization in Canada is a stub . You can help Misplaced Pages by expanding it . Topographic prominence In topography , prominence or relative height (also referred to as autonomous height , and shoulder drop in US English, and drop in British English) measures

5301-408: The child peak. For example, one common use of the concept of parent is to make clear the location of a peak. If we say that Peak A has Mont Blanc for a parent, we would expect to find Peak A somewhere close to Mont Blanc. This is not always the case for the various concepts of parent, and is least likely to be the case for encirclement parentage. Figure 3 shows a schematic range of peaks with

5394-410: The color underlying the minor peaks indicating the encirclement parent. In this case the encirclement parent of M is H whereas an intuitive view might be that L was the parent. Indeed, if col "k" were slightly lower, L would be the true encirclement parent. The encirclement parent is the highest possible parent for a peak; all other definitions indicate a (possibly different) peak on the combined island,

5487-556: The dangers mountaineers face include loose or falling rocks, falling ice, snow- avalanches , the climber falling, falls from ice slopes, falls down snow slopes, falls into crevasses, and the dangers from altitude and weather. From 1947 to 2018 in the United States "2,799 people were reported to be involved in mountaineering accidents and 43% of these accidents resulted in death." Climbers themselves are responsible for nearly all climbing accidents. When planning and preparing for

5580-488: The disadvantage in using the encirclement parent. A hill in a low-lying area like the Netherlands will often be a direct child of Mount Everest , with its prominence about the same as its height and its key col placed at or near the foot of the hill, well below, for instance, the 113-meter-high key col of Mont Blanc . When the key col for a peak is close to the peak itself, prominence is easily computed by hand using

5673-475: The encirclement parent.) While it is natural for Aconcagua to be the parent of Denali, since Denali is a major peak, consider the following situation: Peak A is a small hill on the coast of Alaska, with elevation 100 m and key col 50 m. Then the encirclement parent of Peak A is also Aconcagua, even though there will be many peaks closer to Peak A which are much higher and more prominent than Peak A (for example, Denali). This illustrates

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5766-471: The first of several unsuccessful attempts on Mont Blanc in France. He then offered a reward to anyone who could climb the mountain, which was claimed in 1786 by Jacques Balmat and Michel-Gabriel Paccard . The climb is usually considered an epochal event in the history of mountaineering, a symbolic mark of the birth of the sport. By the early 19th century, many of the alpine peaks were reached, including

5859-610: The first professional female mountaineers) made ascents in the Himalayas, including one of the Nun Kun peaks (23,300 ft (7,100 m)). A number of Gurkha sepoys were trained as expert mountaineers by Charles Granville Bruce , and a good deal of exploration was accomplished by them. In 1902 the Eckenstein–Crowley Expedition, led by English mountaineer Oscar Eckenstein and English occultist Aleister Crowley

5952-429: The first without supplemental oxygen. In 1978 he climbed Mount Everest with Peter Habeler without supplemental oxygen, the first men to do so. Long the domain of the wealthy elite and their agents, the emergence of the middle-class in the 19th and 20th centuries resulted in mass interest in mountaineering. It became a popular pastime and hobby of many people. Some have come to criticize the sport as becoming too much of

6045-440: The height of a mountain or hill's summit relative to the lowest contour line encircling it but containing no higher summit within it. It is a measure of the independence of a summit . The key col ("saddle") around the peak is a unique point on this contour line and the parent peak is some higher mountain, selected according to various criteria. The prominence of a peak is the least drop in height necessary in order to get from

6138-492: The high contour (giving in a pessimistic estimate ), the low contour (giving an optimistic estimate), their mean (giving a "midrange" or "rise" prominence ) or an interpolated value (customary in Britain). The choice of method depends largely on the preference of the author and historical precedent. Pessimistic prominence, (and sometimes optimistic prominence) were for many years used in USA and international lists, but mean prominence

6231-534: The high mountains themselves – in extremely remote areas, more rudimentary shelters may exist. The mountain huts are of varying size and quality, but each is typically centred on a communal dining room and have dormitories equipped with mattresses, blankets or duvets, and pillows; guests are expected to bring and use their own sleeping bag liners . The facilities are usually rudimentary, but, given their locations, huts offer vital shelter, make routes more widely accessible (by allowing journeys to be broken and reducing

6324-418: The hut, a variety of hot and cold drinks (including beer and wine), and high carbohydrate dinners in the evenings. Not all huts offer a catered service, though, and visitors may need to provide for themselves. Some huts offer facilities for both, enabling visitors wishing to keep costs down to bring their own food and cooking equipment and to cater using the facilities provided. Booking for overnight stays at huts

6417-401: The ice, as well as traditional rock climbing equipment for anchoring in mixed terrain. Often, mountaineers climbing steep snow or mixed snowy rock terrain will not use a fixed belay. Instead, each climber on the team will climb at the same time while attached to anchors, in groups of two. This allows for safety should the entire team be taken off their feet which also allows for greater speed than

6510-503: The key col. The encirclement parent is the highest point on this entire island. For example, the encirclement parent of Mont Blanc , the highest peak in the Alps , is Mount Everest . Mont Blanc's key col is a piece of low ground near Lake Onega in northwestern Russia (at 113 m (371 ft) elevation), on the divide between lands draining into the Baltic and Caspian Seas . This is

6603-404: The leader will often transfer all necessary protection devices (known as a rack) to the follower. The follower then becomes the leader and will ascend the next pitch. This process will continue until the climbers either reach the top, or run into different terrain. For extremely vertical rocks, or to overcome certain logistical challenges, climbers may use aid climbing techniques. This involves

6696-459: The list, or cutoff . John and Anne Nuttall's The Mountains of England and Wales uses a cutoff of 15 m (about 50 ft), and Alan Dawson's list of Marilyns uses 150 m (about 500 ft). (Dawson's list and the term "Marilyn" are limited to Britain and Ireland). In the contiguous United States, the famous list of " fourteeners " (14,000 foot / 4268 m peaks) uses a cutoff of 300 ft / 91 m (with some exceptions). Also in

6789-435: The main sources of prominence data in Britain and Ireland. Other sources of data commonly ignore human-made alterations, but this convention is not universally agreed upon; for example, some authors discount modern structures but allow ancient ones. Another disagreement concerns mountaintop removal , though for high-prominence peaks (and for low-prominence subpeaks with intact summits), the difference in prominence values for

6882-420: The meeting place of two 113 m (371 ft) contours, one of them encircling Mont Blanc; the other contour encircles Mount Everest. This example demonstrates that the encirclement parent can be very far away from the peak in question when the key col is low. This means that, while simple to define, the encirclement parent often does not satisfy the intuitive requirement that the parent peak should be close to

6975-448: The most famous base camps. Camping is not always an option, or may not be suitable if a mountain is close to civilization. Some regions may legally prohibit primitive camping due to concern for the environment, or due to issues with crowds. In lieu of camping, mountaineers may choose to stay in mountain huts . The European alpine regions, in particular, have a large network of huts. Such huts exist at many different heights, including in

7068-424: The mountain. Some climbers do not use tents at high altitudes unless the snow conditions do not allow for snow caving, since snow caves are silent and much warmer than tents. They can be built relatively easily, given sufficient time, using a snow shovel. The temperature of a correctly made snow cave will hover around freezing, which relative to outside temperatures can be very warm. They can be dug anywhere where there

7161-402: The other hand, ignores water, snow, and ice features and assumes that the surface of the earth is defined by the solid bottom of those features. The dry prominence of a summit is equal to its wet prominence unless the summit is the highest point of a landmass or island, or its key col is covered by snow or ice. If its highest surface col is on water, snow, or ice, the dry prominence of that summit

7254-542: The past century, such as the French technique and German technique . Teams of climbers may choose to attach everyone together with a rope, to form a rope team. The team may then secure themselves by attaching the rope to anchors. These anchors are sometimes unreliable and include snow stakes or pickets, deadman devices called flukes , or buried equipment or rocks. Bollards , which are simply carved out of consolidated snow or ice, also sometimes serve as anchors. Alternatively,

7347-610: The previous authoritative guidebooks such as Climber's Guide to the Rocky Mountains of Canada , first published in 1921, and "A Guide to Climbing and Hiking in Southwestern British Columbia" published in 1986 by Bruce Fairley, and these were adopted by Canadian Mountain Encyclopedia. Previously uncharted peaks were assigned letter codes, geographic names and provisional names. The first phase of

7440-403: The risk of injury or death. The other members of the rope team may proceed with a crevasse rescue to pull the fallen climber from the crevasse. For extremely slippery or steep snow, ice, and mixed rock and ice terrain climbers must use more advanced techniques, called ice climbing or mixed climbing. Specialized tools such as ice screws and ice picks help climbers build anchors and move up

7533-671: The roads. In October 2000, a major project involving about 30 volunteer editors was begun to catalog every Canadian and US mountain. The initial scope was to catalog every peak over 300 meters of topographic prominence . The source of the data in Canada was the 1:50,000 series National Topographic Series maps, and in the United States, the USGS maps. In British Columbia the source was the TRIM data published by British Columbia Basemap. The catalog involved charting and cataloging many peaks without official name. Many of these peaks had "standing names" in

7626-536: The sport. Despite its lack of defined rules and non-competitive nature, certain aspects of mountaineering have much of the trappings of an organized sport, with recognition of specific climbing activities – including climbing wall -based competition – by the International Olympic Committee ; on a club level, the prominent international sport federation the UIAA counts numerous national alpine clubs as its members, while others, such as The Mountaineers and

7719-431: The summit to any higher terrain. This can be calculated for a given peak in the following manner: for every path connecting the peak to higher terrain, find the lowest point on the path; the key col (or highest saddle , or linking col , or link ) is defined as the highest of these points, along all connecting paths; the prominence is the difference between the elevation of the peak and the elevation of its key col. On

7812-418: The traditional technique of belaying one climber at a time. This technique is known as simul-climbing or a running belay and is sometimes also used on ice, however, the risk of dropping frequently displaced ice on the lower team member(s) limits its usefulness on ice. Traditional belays are also used; in this case, this is sometimes necessary due to ice fall hazard, steepness, or other factors. Climbers use

7905-449: The two conventions is typically relatively small. The key col and parent peak are often close to the sub-peak but this is not always the case, especially when the key col is relatively low. It is only with the advent of computer programs and geographical databases that thorough analysis has become possible . For example, the key col of Denali in Alaska (6,194 m) is a 56 m col near Lake Nicaragua . Denali's encirclement parent

7998-503: The use of equipment, such as ladders, fixed lines , and ascenders to help the climber push themself up the rock. In alpine climbing, it is common for climbers to see routes of mixed terrain. This means climbers may need to move efficiently from climbing glacier, to rock, to ice, back and forth in a number of variations. Compacted snow conditions allow mountaineers to progress on foot. Frequently crampons are required to travel efficiently and safely over snow and ice. Crampons attach to

8091-439: The weight of equipment needing to be carried), and offer good value. In Europe, all huts are staffed during the summer (mid-June to mid-September) and some are staffed in the spring (mid-March to mid-May). Elsewhere, huts may also be open in the fall. Huts also may have a part that is always open, but unstaffed, a so-called winter hut. When open and staffed, the huts are generally run by full-time employees, but some are staffed on

8184-418: The world's second-highest mountain is K2 (height 8,611 m, prominence 4,017 m). While Mount Everest 's South Summit (height 8,749 m, prominence 11 m ) is taller than K2, it is not considered an independent mountain because it is a sub-summit of the main summit (which has a height and prominence of 8,848 m). Many lists of mountains use topographic prominence as a criterion for inclusion in

8277-463: Was also a pioneer in developing new equipment and climbing methods. He started using shorter ice axes that could be used single-handedly, designed the modern crampons , and improved on the nail patterns used for the climbing boots. By the 1950s, all the eight-thousanders but two had been climbed starting with Annapurna in 1950 by Maurice Herzog and Louis Lachenal on the 1950 French Annapurna expedition . The highest of these peaks Mount Everest

8370-481: Was climbed in 1953 after the British had made several attempts in the 1920s; the 1922 expedition reached 8,320 metres (27,300 ft) before being aborted on the third summit attempt after an avalanche killed seven porters. The 1924 expedition saw another height record achieved but still failed to reach the summit with confirmation when George Mallory and Andrew Irvine disappeared on the final attempt. The summit

8463-477: Was finally reached on 29 May 1953 by Sir Edmund Hillary and Tenzing Norgay from the south side in Nepal . Just a few months later, Hermann Buhl made the first ascent of Nanga Parbat (8,125 m), on the 1953 German–Austrian Nanga Parbat expedition , completing the last 1,300 meters walking alone, self-medicating with pervitin (based on the stimulant methamphetamine used by soldiers during World War II),

8556-793: Was the Himalayas in South Asia. They had initially been surveyed by the British Empire for military and strategic reasons. In 1892 Sir William Martin Conway explored the Karakoram Himalayas, and climbed a peak of 23,000 ft (7,000 m). In 1895 Albert F. Mummery died while attempting Nanga Parbat , while in 1899 Douglas Freshfield took an expedition to the snowy regions of Sikkim . In 1899, 1903, 1906, and 1908 American mountaineer Fanny Bullock Workman (one of

8649-413: Was the first to attempt to scale K2 . They reached 22,000 feet (6,700 m) before turning back due to weather and other mishaps. Undaunted, in 1905 Crowley led the first expedition to Kangchenjunga , the third highest mountain in the world, in an attempt which Isserman, Angas Weaver and Molenaar describe as "misguided" and "lamentable" due to Crowley's many failings as an expedition leader. Eckenstein

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