The reserve occupies part of the Roc de Chere, small forested mountain range above lake Annecy, between Menthon-Saint-Bernard and Talloires. It offers beautiful walks and points of view on the lake and the surrounding mountains.
Lac de Lessy is an alpine lake situated in Haute-Savoie, in the village of Le Petit-Bornand-les-Glières, in the Aravis mountains.
Access is only by foot.
Activities: fishing - Refuge/snack bar located 500 m from the lake.