This term suggests a ‘round valley’. It is a former sand quarry, used after World War 2. A junction on the Incourt-Courcelles byway along the valley meant sand could be loaded directly onto wagons. This is a municipal property and in 1970 the municipality opened a sports complex here named after André Docquier who was mayor of Chaumont-Gistoux from 1970 to 2000 and passed away in 2003.