Cirque de Navacelles
Encyclopedia
The Cirque de Navacelles is large erosion
al landform, an incised meander, located towards the southern edge of the Massif Central
mountain range in France
. It is located near Saint-Maurice-Navacelles
and Blandas
between the Hérault
département and the Gard
département.
The cirque is isolated, with only a few small villages in the surrounding area. With the 2004 completion of the Millau Viaduct
and the A75
motorway linking Clermont-Ferrand
and Pézenas
, tourism of the region that includes Cirque de Navacelles has increased.
in which the Vis River
eroded a deep channel through the base of the valley, creating an incised meander which eventually eroded through creating a cut-off at the neck of the loop. This left an oxbow lake
which later dried up, leaving deposits of silt
and peat
. This created what is the only patch of arable land for many miles around.
Erosion
Erosion is when materials are removed from the surface and changed into something else. It only works by hydraulic actions and transport of solids in the natural environment, and leads to the deposition of these materials elsewhere...
al landform, an incised meander, located towards the southern edge of the Massif Central
Massif Central
The Massif Central is an elevated region in south-central France, consisting of mountains and plateaux....
mountain range in France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...
. It is located near Saint-Maurice-Navacelles
Saint-Maurice-Navacelles
Saint-Maurice-Navacelles is a commune in the Hérault department in Languedoc-Roussillon in southern France.-See also:*Communes of the Hérault department* Cirque de Navacelles* Vis River* Château de Saint-Maurice-References:*...
and Blandas
Blandas
Blandas is a commune in the Gard department in southern France.-Population:...
between the Hérault
Hérault
Hérault is a department in the south of France named after the Hérault river.-History:Hérault is one of the original 83 departments created during the French Revolution on 4 March 1790...
département and the Gard
Gard
Gard is a département located in southern France in the Languedoc-Roussillon region.The department is named after the River Gard, although the formerly Occitan name of the River Gard, Gardon, has been replacing the traditional French name in recent decades, even among French speakers.- History...
département.
The cirque is isolated, with only a few small villages in the surrounding area. With the 2004 completion of the Millau Viaduct
Millau Viaduct
The Millau Viaduct is a cable-stayed road-bridge that spans the valley of the river Tarn near Millau in southern France. Designed by the British architect Norman Foster and French structural engineer Michel Virlogeux, it is the tallest bridge in the world, with one mast's summit at . It is the...
and the A75
A75 autoroute
The A75 is an autoroute in France.Known also as la Méridienne, it is a developmental project with the aim of speeding up and reducing the cost of car travel from Paris southwards, and apart from the Millau Viaduct, it is entirely free for the between Clermont-Ferrand and Béziers...
motorway linking Clermont-Ferrand
Clermont-Ferrand
Clermont-Ferrand is a city and commune of France, in the Auvergne region, with a population of 140,700 . Its metropolitan area had 409,558 inhabitants at the 1999 census. It is the prefecture of the Puy-de-Dôme department...
and Pézenas
Pézenas
Pézenas is a commune in the Hérault département in Languedoc-Roussillon, southern France. At the 1999 census, its population was 7443.-Name:...
, tourism of the region that includes Cirque de Navacelles has increased.
Fluvial processes in the cirque
The area is an example of a dissected plateauDissected plateau
A dissected plateau is a plateau area that has been severely eroded so that the relief is sharp. Such an area may be referred to as mountainous, but dissected plateaus are distinguishable from orogenic mountain belts by the lack of folding, metamorphism, extensive faulting, or magmatic activity...
in which the Vis River
Vis River
The Vis is a 57.9 km long river in south-central France, in the Languedoc-Roussillon région, right tributary of the Hérault River. Its source is in the Cévennes, near the village of Alzon. It flows between the Causse du Larzac and the Causse de Blandas into the Hérault département and the Gard...
eroded a deep channel through the base of the valley, creating an incised meander which eventually eroded through creating a cut-off at the neck of the loop. This left an oxbow lake
Oxbow lake
An oxbow lake is a U-shaped body of water formed when a wide meander from the main stem of a river is cut off to create a lake. This landform is called an oxbow lake for the distinctive curved shape, named after part of a yoke for oxen. In Australia, an oxbow lake is called a billabong, derived...
which later dried up, leaving deposits of silt
Silt
Silt is granular material of a size somewhere between sand and clay whose mineral origin is quartz and feldspar. Silt may occur as a soil or as suspended sediment in a surface water body...
and peat
Peat
Peat is an accumulation of partially decayed vegetation matter or histosol. Peat forms in wetland bogs, moors, muskegs, pocosins, mires, and peat swamp forests. Peat is harvested as an important source of fuel in certain parts of the world...
. This created what is the only patch of arable land for many miles around.
Road network
Roads in the area are very poorly maintained and are only wide enough for one vehicle. In order to pass the landform, a dangerous, but exhilarating, road which weaves down into the valley and clings to the sheer cliff face on the way back up must be braved. This journey is one of the draws for tourism in the area.External links
- http://www.stacey.peak-media.co.uk/pyrenees/Navacelles/Navacelles.htm