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PYLA DUNE :
According to the maps of the National Geographical Institute (IGN) the Big Pyla Dune moved inward lands of 70 m in 100 m in 23 years (from 1966 till1989), also an average movement of 3 or 4 m a year. This progress of the Big Dune was made to the detriment of the plots of lands of forest which is covered. Every year the sans buries 8000 m2 of the forest. Big Pyla Dune is astride about twenty private properties. In about forty years, if the progress of the dune continues with the same rhythm, it will reach the road of Biscarrosse, and campings situates at feet of the dune will be burried. The dune forms a mobile mass about 60 millions m3 of sand, 500 m of wide, (from esat to west) on 3 km (from north to south), in the south antrance of the bay of Arcachon. It presents a flap sloap towards the ocean, and an another one, abrupter, on its opposite side (also said "forest side"). Place of interest very frequentes, the Dune was the object of measures of rehabilitation and its visit is fitted out within the framework of an opération "Big National Site", led to the initiative of the Ministry of the Town, Country and Environment, in partnership with the local people in charge. This to assure the conservation of the site, frequented by numerous tourists whom it is necessary to be able to waelcome, inform and guide. Having left convey them in a car park, thousands of persons come there to rise at the top of the dune via a wooden staircase or to climb it more sportly direstly in the sand. The descent of return quiet for those who take back the staircase, gets many sensations to those who prefer to tumble down the slope with long strides, making of this fact slide the sand a little more quickly towards the forests. Down from this giant, contemplate some remarkable sites : the sea of pines, the Bay of Arcachon with the peninsula of Cap Ferret, the Bengh of Arguin...
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