Old quarry which now serves as a hangout spot thanks to its small beach-like sand area and as a climbing crag. First circuit dates back to 1975 but the area was mostly cleaned up and became a popular bouldering spot in 2007. Some manufactured holds in the middle section.

Park in "Rue de Corbeville" and access by the descending stairs. Can also be accessed by train. Take the RER line B and stop at "Le Guichet", then go up a series of stairs.