Lac de Naussac is a lovely place to enjoy some time away from the hustle and bustle of daily life. See if any water activities are on offer here, or just enjoy the calm ambiance.
To explore this body of water, make your way to Lozère. There are lots of other things to see and do in the area, like Langogne Hall, Filature des Calquieres Museum, and Robert Louis Stevenson Trail.