From the top of the rocky bar overlooking the Chapelle-des-Bois valley and its village, your eyes will view a wide landscape, from the combe of Cives to the north, to the two almost twin lakes that are the Lac des Mortes and the Lac de Bellefontaine to the north. The hydraulic regime of both lakes is quite particular: during high waters, the Lac de Bellefontaine’s waters overflow into the Lac des Mortes; however, during low waters, the water in the Lac des Mortes feeds the Lac de Bellefontaine.