Bassin de la Druance translated as the Druance Basin is a Natura 2000 conservation area that is 5,729 hectares in size.
[1] The area is a mixture of shales, Brioverian sandstones then Ordovician sandstones, with which the wet meadows at the bottom of the valley, the wooded hillsides and woods at the summit all sit upon.
[1] It is spread across 10 different communes all within the Orne department;[1] Some of this protected site is within the area known as Suisse Normande[2] The conservation area has five species listed in Annex 2 of the Habitats Directive;[3]