It is a hamlet of houses without great pretension, sometimes nestled just behind the dune. Only a hiking path separates some gardens from the mound of sand. In Treffiagat, on the coast of southern Finistère, the Léhan district, made up of around forty pavilions, grew up along the dune cord from the 1960s. At that time, “the dune was completely flat and extended 30 meters more”traces Pierre (1), a resident, by showing period photos.
In an aerial view, the sandy expanse which constitutes most of the coastline of this town of 2,500 inhabitants appears covered with tents and caravans. “It was wild camping!” remembers the septuagenarian on this Friday in early January. Born in the neighborhood in 1952, the former carpenter built his house there, with his own hands, on land belonging to his grandparents, at the end of the 1970s. Then the “warning signals” began to follow one another, he says: the riprap, made in the 1980s to consolidate part of the dune, dug it out at the other end. And to natural erosion have been added the effects of climate change, which is increasing
