In the past, the Cent-Vergées belonged to the abbey of Mont-Saint-Michel and the inhabitants used to lift peat. That is, to recover the surface of the soil and dry it for use as fuel.
This peatylande is made up of bruyères and ajoncs which, depending on the season, take on purple and gold colors.
The natural heritage here is very rich, combining species typical of peat bogs with those of moorlands and wet woodlands.
One of them, rare and protected, lives there peacefully: the drosera or round-leaved crossolis, an insectivorous plant, from 2 to 5 cm in diameter.