The Roof of the Cévennes (by mountain-bike)

The Tarnon has its spring in the Aigoual massif (1,565 m) in the Bassurels district. 38.9 km later, it flows into the Tarn downstream of Florac, having already flown together with the Mimente. It separates the Causse Méjean from the Cévennes. Upstream of Rousses, the Trépalous flows into the Tarnon. That river has carved out the Gorges du Tapoul, which are famous for canyoning. The Tarnon is a Cévenol river: very strong and sudden floods can occur during intense weather events.

The draille follows the ridge and crosses the Can de l'Hospitalet. This drovers' road enables the flocks of the plains (from the southern  Cévennes and the Crau) to get up to the northern Gévaudan (Aubrac, Margeride, Mont Lozère). This draille is only a branch of a bigger network on which livestock still migrates today.

A beautiful view onto Mont Aigoual (1,567 m) –  a mountain of winds, fog, snow and rain. Banks of clouds coming from the Mediterranean rub against its slopes and can cause violent precipitation (also called Cévenol episodes). This temperamental mountain is home to the last mountain weather-station in France.