The Bardenas Reales (sometimes referred as Bárdenas Reales ) is a semi-desert natural region , or badlands , of some 42,000 hectares (420 km ; 104,000 acres) in southeast Navarre ( Spain ). The soils are made up of clay , chalk , and sandstone and have been eroded by water and wind creating surprising shapes, canyons, plateaus, tabular structures, and isolated hills, called cabezos. Bardenas Reales lacks urban areas, vegetation is scarce and the many streams that cross the territory have a markedly seasonal flow, staying dry most of the year.
14-610: The Devon Redlands is a natural region in southwest Britain that has been designated as National Character Area (NCA) 148 by Natural England . The boundary of the Devon Redlands NCA runs along the south Devon coast from Torquay to Otterton before heading almost due north to Burlescombe , then turning northwest to Clayhanger and Shillingford . From Shillingford it runs initially southwest and then south, taking in Bampton , Cove , Loxbeare and Withleigh. South of
28-440: Is a region which is distinguished by its common natural features of geography , geology , and climate . From the ecological point of view, the naturally occurring flora and fauna of the region are likely to be influenced by its geographical and geological factors, such as soil and water availability , in a significant manner. Thus most natural regions are homogeneous ecosystems . Human impact can be an important factor in
42-593: Is situated in the southeastern part of the territory on the border of the Autonomous Community of Aragon . Formed by plateaus of different altitudes and cut by rivers flowing at the bottom of the cliffs, this part of the Bardenas is covered with vegetation. There is a central plateau that lies 100 m (330 ft) above the surrounding area where corn is grown. It is formed by Tertiary and Quaternary soils that were raised by pressure associated with
56-505: Is the central area and more desert. Its relief is characterized by extensive plains and deep gorges through which rivers flow. This Bardena owes its name to the presence of white salt that extends over the surface due to the abundance of gypsum in the soil. The White Bardena divides into two, the White Lower and Upper White. The first is the most depressed and the second extends from Pisquerra and Eguaras to Carcastillo. Black Bardena
70-646: The A3072 it swings due west in a long finger that extends beyond Bow, but returns via Yeoford and Newton St Cyres before swinging west of Exeter and heading roughly southwards again through Newton Abbot to Torquay. Neighbouring NCAs are (clockwise from the southwest): South Devon , Dartmoor , The Culm , Exmoor , the Vale of Taunton and Quantock Fringes , the Blackdowns , the Yeovil Scarplands and
84-628: The Ebro valley at the foot of the mountains of the Yugo and the Zaragoza region of Cinco Villas . It is 45 km (28 mi) from north to south and 24 km (15 mi) east-west and at an altitude ranging between 280 and 659 m (919 and 2,162 ft). Its area is 41,845 hectares (418.45 km ; 103,400 acres). There are only sixteen municipalities, of which thirteen are in Navarre and three in
98-521: The Marshwood and Powerstock Vales . The Devon Redlands have a very strong, unified character, readily visible in the colouration of its ploughed fields, cliffs and outcrops, as well as the building material of its traditional stone and cob farmsteads, hamlets and villages. This colouration is derived from the red sandstone that underlies the area and produces the rich red soils that make the Redlands
112-681: The Thai highlands , and the Pays de Bray in Normandy, are examples of this. Others might include regions with particular geological characteristics, like badlands , such as the Bardenas Reales , an upland massif of acidic rock, or The Burren , in Ireland . Bardenas Reales The Bardenas is in the southeast of Navarre, bordering Aragon . It is located in the middle of the depression of
126-471: The agricultural heart of the county of Devon . It is a region of gently rolling hills, with sunken lanes and high hedgerows enclosing smallish fields utilized both for grazing and crops. Rivers are important landscape features; their valleys are flat-bottomed and open up into extensive flood plains in the low-lying terrain of the central Redlands, dominated especially by the estuary of the River Exe south of
140-495: The city of Exeter . Around this heartland, the land rises towards the edge of the west, north and east of the region. In the south, the coastal strip borders on the English Channel and has achieved partial World Heritage status . 50°48′N 3°24′W / 50.8°N 3.4°W / 50.8; -3.4 Natural region A natural region (landscape unit) is a basic geographic unit. Usually, it
154-643: The creation of the Pyrenees and the mountains of Central Spain that caused the collapse of the Ebro basin forming an inland sea enclosed by the Catalan Coastal Range . Sediments laid down were then eroded from the Eocene onwards. These formed gravel and sandstone that stayed at the top, fine sand, clay, and limestone occupy the lower slopes. Clay remained in the centre and limestone and gypsum formed at
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#1732771973253168-471: The edges. The gravel, sandstones, and clay were all associated with alluvial deposits. Mixtures of sandstone and clay formed two mountain ranges between the centre and perimeter. The sediments may have been four metres (13 ft) thick. Ten million years ago, the basin opened to the Mediterranean Sea and drained, leaving the Ebro, which began water erosion along the southern perimeter, which left
182-509: The province of Zaragoza. The Navarrese are Valtierra , Arguedas , Carcastillo , Santacara , Mélida , Rada , Caparroso , Villafranca , Cadreita , Tudela , Cabanillas , Fustiñana and Buñuel , while the Zaragozan are: Tauste , Ejea de los Caballeros and Sádaba . Las Bardenas is divided into several distinct areas which mainly include two, Black Bardena and White Bardena, but there are other smaller areas of great singularity. It
196-405: The shaping and destiny of a particular natural region. The concept "natural region" is a large basic geographical unit, like the vast boreal forest region. The term may also be used generically, like in alpine tundra , or specifically to refer to a particular place. The term is particularly useful where there is no corresponding or coterminous official region. The Fens of eastern England ,
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