This place includes a lock keeper's house from 1865 which, unoccupied since 1987, was sold in 2007 by the Equipment Department and a dam-lock with fish pass. Nearby is the “motte qui branle” whose legend from the end of the XNUMXth century says that the unstable ground swallowed up unlucky travelers in the swamps! In fact, the "motte", an elevated plot surrounded by "ditches" (canals) for growing the farm's vegetables, wavers under the weight of its visitors, especially at the time of floods.