The valley's forested area and the unspoiled natural environment of the Belledonne range provide a habitat for Alpine flora and fauna that is as abundant as it is rich and varied :
- Fauna : chamoix, ibex, marmots, hare, black grouse, ptarmigan.
- Flora : spruce, larch, rhododendron, cranberries, lady's slipper orchid, alpine rock jasmine, glacier buttercup, génépi.