The Bourdous valley

The black marl of the Bourdous valley is continuously being eroded with every storm that comes. Maintaining the slopes is hard work that humans have been trying to do since 1860 after overuse of the woods and pastures until the 19th century. To stop this erosion, the Waters and Forests Service replanted the entire valley and major civil engineering work was carried out. The landscape you see is the fruit of this largescale work.