The river Tarn

The Tarn has its spring at an altitude of 1,550 m under the ridge of Mont Lozère. Having carved its way into the granite bedrock, it separates the Bougès massif from Mont Lozère. After Bédouès, it meets the river Tarnon and slowly enters the limestone region, in which its bed is increasingly deep. At its confluence with the Jonte, at Le Rozier, the Tarn leaves the department of the Lozère.