What peace and quiet interrupted only by the wildlife living around these vast stretches of water! In the flood plain of the River Lizonne, vast peat bogs developed at the bottom of the valley during the Quaternary period. There are still 65ha of them, of which about 30ha, with a thickness of 4m, have been developed to reveal the secrets of this unique ecosystem. Trails of varying distances provide an opportunity to observe the fauna and flora.