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75-402: The Saba volcano is potentially dangerous. It is currently classified as "dormant", which means it is an active volcano that is not erupting now, but could erupt in the future. The last eruption was in or around the year 1640 which included explosions and pyroclastic flows . The most recent major eruption was at least 5,000 years ago. According to the U.S. Global Volcanism Program , Saba's volcano

150-590: A microwave relay station at the top of Mount Scenery. The purpose of the microwave relay was to link the islands of Antigua and Tortolla via Saba. Though no longer in operation, the relay station and tower still sit at the top of Mount Scenery today. JRCC Curaçao (the Dutch Caribbean Coast Guard Joint Rescue Coordination Center at Curaçao), has one of its emergency monitoring stations located on Mount Scenery. The station, "DSC Station Mt. Scenery",

225-594: A path or track , is an unpaved lane or a small paved road not intended for usage by motorized vehicles , usually passing through a natural area . In the United Kingdom and Ireland , a path or footpath is the preferred term for a pedestrian or hiking trail. The term is also applied in North America to accompanying routes along rivers, and sometimes to highways. In the US, the term was historically used for

300-629: A boat, often a barge . They can be paved or unpaved and are popular with cyclists and walkers; some are suitable for equestrians. Equestrians have legal access to all towpaths in Scotland, and there is a campaign for similar rights in England and Wales. In snowy winters in the USA they are popular with cross-country skiers and snowmobile users. Most canals were owned by private companies in Britain, and

375-542: A bridleway must give way to other users on foot or horseback. The seawall in Stanley Park , Vancouver, British Columbia , Canada is popular for walking, running, cycling, and inline skating . There are two paths, one for skaters and cyclists and the other for pedestrians. The lane for cyclists and skaters goes one-way in a counterclockwise loop. Foreshoreway (also oceanway ) is a term used in Australia for

450-509: A general acceptance that towpaths are open to everyone, and not just boat users. The concept of free access to towpaths is enshrined in the legislation which transferred responsibility for the English and Welsh canals from British Waterways to the Canal & River Trust in 2012. Not all towpaths are suitable for use by cyclists, but where they are, and the canal is owned by British Waterways,

525-546: A gravel or dirt surface suitable for walking, mountain bikes and horses. In the USA the 42 mi (68 km) Cheshire Rail Trail , in New Hampshire , can be used by hikers, horseback riders, snowmobilers, cross-country skiers, cyclists, and even dogsledders . In Canada, following the abandonment of the Prince Edward Island Railway in 1989, the government of Prince Edward Island purchased

600-577: A legally protected right to travel. National parks , nature preserves , conservation areas and other protected wilderness areas may have trails that are restricted to pedestrians. Footpaths can be connected to form a long-distance trail or way, which can be used by both day hikers and backpackers . Some trails are over 1,000 miles (1,600 km) long. In the US and Canada, where urban sprawl has reached rural communities, developers and local leaders are currently striving to make their communities more conducive to non-motorized transportation through

675-598: A mix of challenging terrain, singletrack , smooth fireroads , and even paved paths. Trails with an easy or moderate technical complexity are generally deemed cross-country trails, while trails difficult even to experienced riders are more often dubbed all-mountain , freeride , or downhill. Downhilling is popular at ski resorts like Mammoth Mountain in California, or Whistler Blackcomb in British Columbia, where ski lifts are used to get bikes and riders to

750-491: A particular use is accompanied by prohibitions against that use on other trails within the trail system. Trail segregation may be supported by signage, markings, trail design and construction (especially the selection of tread materials), and by separation between parallel treads. Separation may be achieved by "natural" barriers including distance, ditching, banking, grading, and vegetation, and by "artificial" barriers including fencing, curbing, and walls. Bicycle trails encompass

825-607: A permit is required. There is no charge for a permit, but it acts as an opportunity to inform cyclists about safe and unsafe areas to cycle. Some areas including London are exempt from this policy, but are covered instead by the London Towpath Code of Conduct and cyclists must have a bell, which they ring twice when approaching pedestrians. Parts of some towpaths have been incorporated into the National Cycle Network, and in most cases this has resulted in

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900-534: A proliferation of mountain bike trails in many countries. Often these will be grouped to form larger complexes, known as trail centers. In the early years of the 20th century, the term auto trail was used for a marked highway route, and trail is now used to designate routes, including highway routes, designated for tourist interest like the Cabot Trail , Nova Scotia, Canada and the Quilt Trails in

975-425: A pyroclastic flow traveled for several hundreds of meters above the sea. A pyroclastic flow can interact with a body of water to form a large amount of mud, which can then continue to flow downhill as a lahar . This is one of several mechanisms that can create a lahar. In 1963, NASA astronomer Winifred Cameron proposed that the lunar equivalent of terrestrial pyroclastic flows may have formed sinuous rilles on

1050-438: A research team at Kiel University , Germany, of pyroclastic flows moving over the water. When the reconstructed pyroclastic flow (stream of mostly hot ash with varying densities) hit the water, two things happened: the heavier material fell into the water, precipitating out from the pyroclastic flow and into the liquid; the temperature of the ash caused the water to evaporate, propelling the pyroclastic flow (now only consisting of

1125-905: A route into or through wild territory used by explorers and migrants (e.g. the Oregon Trail ). In the United States, "trace" is a synonym for trail, as in Natchez Trace . Some trails are dedicated only for walking, cycling, horse riding , snowshoeing or cross-country skiing , but not more than one use; others, as in the case of a bridleway in the UK, are shared-use and can be used by pedestrians, cyclists and equestrians alike. Although most trails are for low-traffic, non-motorized usage, there are also unpaved trails used by dirt bikes , quad bikes and other off-road vehicles , usually for extreme sports and rally races . In some places, like

1200-472: A trail is also called a track or piste. Recreational cross-country skiing is also called touring, especially in Europe. Some skiers stay out for extended periods using tents and equipment similar to bushwalkers and hikers, whereas others take shorter trips from ski resorts on maintained trails. In some countries, organizations maintain a network of huts for use by cross-country skiers in wintertime. For example,

1275-479: A type of greenway that provides a public right-of-way along the edge of the sea open to both walkers and cyclists. A forest road is a type of rudimentary access road, built mainly for the forest industry . In some cases they are used for backcountry recreation access. There is open access to most Forestry Commission roads and land in Great Britain for walkers, cyclists and horse riders and, since

1350-498: A wide variety of trail types, including shared-use paths used for commuting, off-road cross-country trails and downhill mountain bike trails. The number of off-road cycle trails has increased significantly, along with the popularity of mountain bikes . Off-road bicycle trails are generally function-specific and most commonly waymarked along their route. They may take the form of single routes or form part of larger complexes, known as trail centers. Off-road trails often incorporate

1425-469: Is a Digital Selective Calling (DSC) station, meaning that it has "equipment that allows mariners to instantly send or receive automatically formatted distress alerts to vessels and coast stations in the area". DSC Station Mt. Scenery provides 24-hour monitoring with a range of 70 nautical miles (130 km; 81 mi). On the lower slopes of Mount Scenery in the village of St. Johns , the St. John's Lighthouse

1500-545: Is a Walloon initiative aimed at creating a network of route itineraries reserved for pedestrians, cyclists, horse riders and people with reduced mobility. The 1,350 km (840 mi) network makes use of towpaths on river banks and disused railway or vicinal tramway lines ( narrow-gauge tramways). Old railway lines have been leased by the Walloon Government for 99 years using emphyteutic lease contracts. Where necessary, new paths are created to link parts of

1575-423: Is a sunken path or lane , i.e., a road or track that is significantly lower than the land on either side, not formed by the (recent) engineering of a road cutting but possibly of much greater age. Various mechanisms have been proposed for how holloways may have been formed, including erosion by water or traffic; the digging of embankments to assist with the herding of livestock; and the digging of double banks to mark

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1650-523: Is a strenuous out-and-back trail, which goes up 1064 steps to Mt. Scenery's summit and back. It takes about 90 minutes each way. The main trailhead for Mt. Scenery Trail is located on the road just outside Windwardside , across from the Trail Shop. There are two alternative accesses to the trail: one from the end of the Mountain Road, which reduces the hike by about 25 minutes; and one from

1725-432: Is a type of thoroughfare that is intended for use only by pedestrians either within an urban area or through the countryside. An urban footpath is usually called an alley or lane and often paved (see also: sidewalk and pavement ). Other public rights of way , such as bridleways , byways , towpaths, and green lanes are also used by pedestrians. In England and Wales, there are rights of way on which pedestrians have

1800-559: Is common with rail trails . Shared use may also refer to alternate day arrangements, whereby two uses are segregated by being permitted every other day. This is increasingly common on long-distance trails shared by equestrians and mountain bike users; these two user communities have similar trail requirements but may experience difficult encounters with each other on the trail. The Trans Canada Trail can be used by cyclists, hikers, horseback riders, and walkers, as well as cross-country skiers , snowmobilers and snowshoers in winter. In

1875-481: Is increasingly common and diverse. For example, bike trails are used not only on roads open to motor vehicles but also in trail systems open to other trail users. Some trails are segregated for use by both equestrians and mountain bikes or by equestrians or mountain bikes alone. Designated "wilderness area" trails may be segregated for non-wheeled use permitting backpacking and horses but not permitting mountain bikes and motorized vehicles. Often, trail segregation for

1950-480: Is known as the Mount Scenery Trail, and is a popular hiking trail. In 2018, Mount Scenery Nature Park was established. The park covers an area of approximately 3.42 square kilometres (1.32 sq mi), which is about 26% of Saba's total area. The park supports eco-tourism , maintains the trail system , protects biodiversity , and preserves historical structures. In 2019, the park was elevated to

2025-548: Is sometimes abbreviated to PDC (pyroclastic density current). Several mechanisms can produce a pyroclastic flow: Flow volumes range from a few hundred cubic meters to more than 1,000 cubic kilometres (240 cu mi). Larger flows can travel for hundreds of kilometres, although none on that scale has occurred for several hundred thousand years. Most pyroclastic flows are around one to ten cubic kilometres ( 1 ⁄ 4 – 2 + 1 ⁄ 2  cu mi) and travel for several kilometres. Flows usually consist of two parts:

2100-488: Is the northernmost active volcano in the Caribbean. On 2 September 2019, Mount Scenery Nature Park was elevated to the status of national park. It has a hiking trail to the summit of the volcano, which is one of Saba's biggest tourist attractions. Along the way up the mountain are the multiple climate zones of Saba, including a cloud forest at the summit. The formation of Mount Scenery began about 500,000 years ago, when

2175-529: The 1883 eruption of Krakatoa , supported by experimental evidence, shows that pyroclastic flows can cross significant bodies of water. However, that might be a pyroclastic surge , not flow, because the density of a gravity current means it cannot move across the surface of water. One flow reached the Sumatran coast as far as 48 kilometres (26 nautical miles) away. A 2006 BBC documentary film, Ten Things You Didn't Know About Volcanoes , demonstrated tests by

2250-558: The Alps , trails are used by alpine agrarian communities for moving cattle and other livestock . In Australia, the term track can be used interchangeably with trail or walk, and can refer to anything from a dirt road to an unpaved pedestrian path . In New Zealand, the terms track or walkway are used almost exclusively except when referring to cross-country skiing : "walkways vary enormously in nature, from short urban strolls, to moderate coastal locations, to challenging tramps [hikes] in

2325-805: The Intermodal Surface Transportation Efficiency Act of 1991 mandates that states must use a minimum of 30 percent of these funds for motorized trail uses. Some members of the US government and environmental organizations, including the Sierra Club and The Wilderness Society . have criticized off-road vehicle use on public land . They have noted several consequences of illegal ORV use such as pollution, trail damage, erosion , land degradation , possible species extinction , and habitat destruction which can leave hiking trails impassable. ORV proponents argue legal use taking place under planned access along with

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2400-496: The Moon . In a lunar volcanic eruption, a pyroclastic cloud would follow local relief, resulting in an often sinuous track. The Moon's Schröter's Valley offers one example. Some volcanoes on Mars , such as Tyrrhenus Mons and Hadriacus Mons , have produced layered deposits that appear to be more easily eroded than lava flows, suggesting that they were emplaced by pyroclastic flows. Trail#Linear A trail , also known as

2475-506: The Norwegian Mountain Touring Association maintains over 400 huts stretching across hundreds of kilometres of trails hikers use in the summer and skiers use in the winter. Horse riding and other equestrian uses of trails continue to be a popular activity for many trail users. Horses can usually negotiate much the same grades as hikers, but not always, although they can more easily clear obstacles in

2550-678: The Persian Empire , existed before the Christian era and covered great distances. The Post Track , a prehistoric causeway in the valley of the River Brue in the Somerset Levels , England, is one of the oldest known constructed trackways and dates from around 3838 BC. The idea of following a path or track for exercise or pleasure developed during the 18th century in Europe and arose because of changing attitudes to

2625-639: The basal flow hugs the ground and contains larger, coarse boulders and rock fragments, while an extremely hot ash plume lofts above it because of the turbulence between the flow and the overlying air, admixing and heating cold atmospheric air causing expansion and convection. Flows can deposit less than 1 meter to 200 meters in depth of loose rock fragment. The kinetic energy of the moving cloud will flatten trees and buildings in its path. The hot gases and high speed make them particularly lethal, as they will incinerate living organisms instantaneously or turn them into carbonized fossils: Testimonial evidence from

2700-539: The subaerial part of Saba began forming. About 100,000 years ago, another phase of volcanic activity created the hills that surround The Bottom . It was likely during this time that Mount Scenery's lava dome summit formed. The last major eruption happened about 5,000 years ago, during the Holocene era. The volcano was plugged by a massive basalt rock , which is why there is no typical volcanic crater at Mount Scenery's summit. Volcanic activity on Saba occurred up to

2775-450: The "Grand Concourse", is an integrated walkway system that has over 160 km (99 mi) of walkways, which link every major park, river, pond and green space in six municipalities. A motorized trail is a trail intended for off-road vehicles for example 4×4 cars, dirt bikes, All-terrain vehicles (ATV). Motorized trail use remains very popular with some people, particularly in the US. The Recreational Trails Program defined as part of

2850-705: The Bud's Mountain Trail, which joins the Mt. Scenery trail at the highest shelter. At the top of the trail, there are three different viewpoints of the island. The lower portion of the trail goes through rainforest and secondary rainforest . Here hikers can see tree ferns , Elephant Ears ( Taro ), wild plantains ( Heliconia ), Mountain Palm ( Euterpe precatoria ), and "Mountain Manna" ( Begonia retusa ). The upper 50 metres (160 ft) of

2925-631: The Countryside Bill of 1968, it has become the largest provider of outdoor recreation in Britain. The commission works with associations involved in rambling , cycling, mountain biking and horse riding to promote the use of its land for recreation. The trails open to the public are not just forest roads. A notable example of the commission's promotion of outdoor activity is the 7stanes project in Scotland, where seven purpose built areas of mountain bike trails have been laid, including facilities for disabled cyclists. A Holloway (also hollow way)

3000-651: The Dutch LF-Routes , the German D-Routes , and the British National Cycle Network , and existing general-purpose roads, together with new stretches of cycle routes to connect them. Off-road cycling can cause soil erosion and habitat destruction if not carried out on established trails. This is true when trails are wet, though overall, cycling may not have more of an impact as other trail users. In cross-country skiing,

3075-460: The KNMI had four seismic monitoring stations on Saba. In 2022, the KNMI installed four cost-effective GNSS units Saba, one of which is located at the top of Mount Scenery. The units are solar-powered , and were installed as part of a pilot study to assess the suitability of cost-effective GNSS use for monitoring volcanic activity. The Mount Scenery Trail is Saba's most popular hiking trail. The trail

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3150-498: The Trans Canada Trail development emulated the successful Rails-to-Trails initiative in the United States. The Trail is multi-use and depending on the section may allow hikers, bicyclists, horseback riders, cross-country skiers and snowmobilers. A towpath is a road or path on the bank of a river, canal, or other inland waterway. The original purpose of a towpath was to allow a horse, or a team of human pullers, to tow

3225-654: The US. The term trail has been used by developers and urban planners for a variety of modern paved roads , highways, and boulevards , in these countries, and some highways continue to be officially called a trail, such as the Susquehanna Trail in Pennsylvania, a designation that varies from a two-lane road to a four-lane freeway. An unusual use of the term is in the Canadian province of Alberta , which has multi-lane freeways called trails. Animals created

3300-516: The United States National Trail Classification System, equestrian trails include simple day-use bridle paths and others built to accommodate long strings of pack animals on journeys lasting many days. Trail design parameters for these uses include trail base width and material, trail clear width, trail clear height, access to water suitable for stock (not human) use, and trail routing. A footpath

3375-513: The United States, the East Coast Greenway —3,000 mi (4,828 km) from Key West to the Canadian border — and the 11 September National Memorial Trail, a 1,300 mi (2,092 km) triangular loop connecting the three 9/11 memorial sites, are two long-distance multi-use paths for cyclists, runners, walkers, even equestrians. In Belgium RAVeL , French for réseau autonome de voies lentes ( autonomous network of slow ways ),

3450-445: The United States. The American Canoe Association has compiled a database of water trails in the United States. The National Park Service Rivers, Trails, and Conservation Assistance Program has compiled a list of water trail resources, success stories, and statewide contacts for water trails. Shared use may be achieved by sharing a trail easement, but maintaining segregated and sometimes also separated trail treads within it. This

3525-468: The White Mountains of New Hampshire. The path was blazed in 1819 by Abel Crawford and his son, Ethan Allen. Originally 8.25 miles in length (now 8.5 miles), the trail leads to the summit of Mt. Washington. Trails can be located in different settings for various uses. These can include: Trail segregation, the practice of designating certain trails as having a specific preferred or exclusive use,

3600-817: The boundaries of estates. These mechanisms are all possible and could apply in different cases. Rail trails or paths are shared-use paths that take advantage of abandoned railway corridors. They can be used for walking, cycling and horseback riding. They exist throughout the world. RailTrails Australia describes them as: Following the route of the railways, they cut through hills, under roads, over embankments and across gullies and creeks. Apart from being great places to walk, cycle or horse ride, rail trails are linear conservation corridors protecting native plants and animals. They often link remnant vegetation in farming areas and contain valuable flora and fauna habitat. Wineries and other attractions are near many trails as well as B&B's and other great places to stay. Most trails have

3675-577: The first trails, which were "later adapted by humans". Subsequently, farmers moved cattle to market along drove roads and between winter and summer grazing creating trails. More recently, former industrial routes, such as railway rights of way and canal towpaths , have been turned into recreational trails. Many historic routes, like the Silk Road , the Amber Road and the Royal Road of

3750-481: The ground and hurtle downhill or spread laterally under gravity. Their speed depends upon the density of the current, the volcanic output rate, and the gradient of the slope. The word pyroclast is derived from the Greek πῦρ ( pýr ), meaning "fire", and κλαστός ( klastós ), meaning "broken in pieces". A name for pyroclastic flows that glow red in the dark is nuée ardente (French, "burning cloud"); this

3825-413: The ground away from a volcano at average speeds of 100 km/h (30 m/s; 60 mph) but is capable of reaching speeds up to 700 km/h (190 m/s; 430 mph). The gases and tephra can reach temperatures of about 1,000 °C (1,800 °F). Pyroclastic flows are the most deadly of all volcanic hazards and are produced as a result of certain explosive eruptions ; they normally touch

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3900-552: The high country [mountains]". Walkway is used similarly in St. John's, Newfoundland , Canada, where the " Grand Concourse ", is an integrated walkway system. In the United Kingdom, the term trail is in common usage. Longer distance walking routes, and government-promoted long-distance paths, collectively known as National Trails , are also frequently called ways as in the Pennine Way and South Downs Way . Generally,

3975-587: The landscape and nature associated with the Romantic movement . In earlier times, walking generally indicated poverty and was associated with vagrancy. In previous centuries long walks were undertaken as part of religious pilgrimages and this tradition continues throughout the world. The first footpath built specifically for recreational hiking in America, and likely the world, is the Crawford Path in

4050-492: The lighter material) along on a bed of steam at an even faster pace than before. During some phases of the Soufriere Hills volcano on Montserrat, pyroclastic flows were filmed about 1 km ( 1 ⁄ 2  nmi) offshore. These show the water boiling as the flow passes over it. The flows eventually built a delta, which covered about 1 km (250 acres). Another example was observed in 2019 at Stromboli when

4125-419: The mid-17th century, just before European settlement on the island . Some of this activity may have occurred while Amerindians were living on the island, as it is believed that Amerindians inhabited the island (at least periodically) for approximately 2,500 years before Europeans arrived. During the early years of European settlement, Mount Scenery (known locally as "The Mountain" through the mid-20th century)

4200-601: The multiple environmental and trail conservation efforts by ORV groups will mitigate these issues. Groups such as the BlueRibbon Coalition advocate Treadlightly, which is the responsible use of public lands used for off-road activities. Noise pollution is also a concern, and several studies conducted by Montana State University , California State University , the University of Florida and others have cited possible negative behavioral changes in wildlife as

4275-555: The network. In England and Wales a bridleway is a trail intended for use by equestrians, but walkers also have a right of way , and Section 30 of the Countryside Act 1968 , permits the riding of bicycles (but not motor-cycles) on public bridleways, though the act says it "shall not create any obligation to facilitate the use of the bridleway by cyclists". Thus the right to cycle exists even though it may be difficult to exercise on occasion, especially in winter. Cyclists using

4350-554: The objectives was to develop a trail that linked up the brumby tracks, mustering and stock routes along the Great Dividing Range, thus providing an opportunity to legally ride the routes of stockmen and drovers who once travelled these areas with pack horses . This Trail provides access to some of the wildest, most remote country in the world. The Bicentennial National Trail is suitable for self-reliant horse riders, fit walkers and mountain bike riders. Within

4425-465: The old paths used by farmers of earlier generations. Hikers of the trail will go through three ecosystems: woodlands , rainforest , cloud forest. Hikers can see Elephant Ears (Taro), Mountain Fuchsia , Maxillaria Orchids , large Banana trees , and other flora. The trail also provides views of Old Booby Hill, Cove Bay , and the airport . In 1972, British Cable & Wireless began construction of

4500-470: The path such as logs. The Bicentennial National Trail (BNT) in Australia is one of the longest marked multi-use trail in the world, stretching 5,330 km (3,312 mi) from Cooktown, Queensland , through New South Wales to Healesville, Victoria . This trail runs the length of the rugged Great Dividing Range through national parks , private property and alongside of wilderness areas . One of

4575-680: The result of some ORV use. Several US states such as Washington have laws to reduce noise generated by off-road and non-highway vehicles. Water trails , also referred to as blueways or paddling trails, are marked routes on navigable waterways such as rivers , lakes , canals and coastlines for people using small non-motorized boats such as kayaks , canoes , rafts , or rowboats . Some trails may be suitable for float tubing or developed in concert with motorized use. They include: signs and route markers; maps; facilities for parking, boat ramps or docks, and places to camp and picnic. There are also state programs and other promotion for water trails in

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4650-679: The right-of-way to the entire railway system. The Confederation Trail was developed as a tip-to-tip walking/cycling gravel rail trail which doubles as a monitored and groomed snowmobile trail during the winter months, operated by the PEI Snowmobile Association. A considerable part of the Trans Canada trail is repurposed defunct rail lines donated to provincial governments by the Canadian Pacific and Canadian National railways rebuilt as walking trails. Much of

4725-430: The rule that a permit was required to give access to a towpath, and began to encourage leisure usage by walkers, anglers and in some areas, cyclists. The British Waterways Act 1995 still did not enshrine any right of public access, although it did encourage recreational access of all kinds to the network, although the steady development of the leisure use of the canals and the decline of commercial traffic had resulted in

4800-824: The status of national park, and is now called Mount Scenery National Park . Scientific monitoring of Mount Scenery's volcanic activity began in the 1970s. From 1978 to 1983, the Lamont–Doherty Geological Observatory monitored Saba's seismic activity. Between 1992 and 2004, the Seismic Research Center in Trinidad operated a seismometer on Mount Scenery's summit. In 2006, the Royal Netherlands Meteorological Institute (KNMI) began monitoring seismic activity related to Mount Scenery. As of 2018,

4875-532: The surface being improved. In France it is possible to cycle, rollerblade , and hike along the banks of the Canal du Midi . A paved stretch of 50 km (31 mi) from Toulouse to Avignonet-Lauragais and another 12 km (7.5 mi) between Béziers and Portiragnes are particularly suited to cycling and rollerblading. It is possible to cycle or walk the entire Canal des Deux Mers from Sète to Bordeaux . Other French canals provide walkers "with many excellent routes, as they are always accompanied by

4950-436: The temperature is still lethally high. Cold pyroclastic surges can occur when the eruption is from a vent under a shallow lake or the sea. Fronts of some pyroclastic density currents are fully dilute; for example, during the eruption of Mount Pelée in 1902, a fully dilute current overwhelmed the city of Saint-Pierre and killed nearly 30,000 people. A pyroclastic flow is a type of gravity current ; in scientific literature, it

5025-425: The term footpath is preferred for pedestrian routes, including long-distance trails, and is used for urban paths and sometimes in place of pavement . Track is used for wider paths (wide enough for vehicles), often used for hiking. The terms bridleway , byway , restricted byway are all recognised legal terms and to a greater or lesser extent in general usage. The increased popularity of mountain biking has led to

5100-553: The top of the mountain. EuroVelo bicycle routes are a network of (currently 17) long-distance cycling routes criss-crossing Europe in various stages of completion; more than 90,000 km (55,923 mi) was in place by 2020. EuroVelo is a project of the European Cyclists' Federation (ECF). EuroVelo routes can be used for bicycle touring across the continent, and by local people making short journeys. The routes comprise both existing national bike routes , such as

5175-570: The towpaths were deemed to be private, for the benefit of legitimate users of the canal. The nationalisation of the canal system in 1948 did not result in the towpaths becoming public rights of way, and subsequent legislation, such as the Transport Act of 1968, which defined the government's obligations to the maintenance of the inland waterways for which it was now responsible, did not include any commitment to maintain towpaths for use by anyone. Ten years later British Waterways started to relax

5250-585: The trail is a cloud forest called the Elfin Forest. Here hikers can see Mountain Mahogany , as well as orchids , liverworts , mosses , ferns , and other epiphytes . The Elfin Trail is Saba's newest hiking trail, established in 2018. The trail begins on the Sandy Cruz Trail , and ends when it intersects with the Mount Scenery Trail. The hike takes about 1 hour one-way. The trail follows

5325-720: The use of less traditional trails. The Robert Wood Johnson Foundation in the US has established the Active Living by Design program to improve the livability of communities in part through developing trails, The Upper Valley Trails Alliance in Vermont has done similar work on traditional trails, while the Somerville Community Path in Somerville, Massachusetts , and related paths, are examples of urban initiatives. In St. John's, Newfoundland, Canada

5400-407: The village of St. Johns farmed an area called "Little Rendez-Vous". Today, most of the farmland on Mount Scenery is gone; although ruins of old farmland are visible on some of Saba's hiking trails. In the late 1960s, a stone stairway was built from Windwardside to the summit of Mount Scenery, consisting of 1,064 steps. The stairway was built by hand, step by step, by local Sabans. Today the stairway

5475-420: Was an important location for farming, and through the late 19th and early 20th century, the majority of Saban families were dependent upon "farming The Mountain" or fishing. Common foodstuffs farmed included bananas , white potatoes , sweet potatoes , tannias , cabbage , pumpkins , and onions . Farmers from the village of Windwardside farmed an area of The Mountain called "Big Rendez-Vous", and farmers from

5550-403: Was constructed. The navigational aid is a 15 metres (49 ft) high tower mounted to a 1-story white concrete base. Its light emits two white flashes every 10 seconds. Pyroclastic flows A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud ) is a fast-moving current of hot gas and volcanic matter (collectively known as tephra ) that flows along

5625-558: Was notably used to describe the disastrous 1902 eruption of Mount Pelée on Martinique , a French island in the Caribbean. Pyroclastic flows that contain a much higher proportion of gas to rock are known as "fully dilute pyroclastic density currents" or pyroclastic surges . The lower density sometimes allows them to flow over higher topographic features or water such as ridges, hills, rivers, and seas. They may also contain steam, water, and rock at less than 250 °C (480 °F); these are called "cold" compared with other flows, although

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