This circuit is going to be the valley of the Blaise and the edges of the Lac du Der
This tour from Sainte-Marie-du-Lac-Nuisement will take you to the Blaise and Arrigny valley and will then take you back to the north shore of Lac du Der where you can choose, along the pond dike back to the port of Nuisement or continue along the dike to the west and back through the small dike separation between the lake and the north basin.