Gorges du Tarn is a canyon (gorge) in the natural park of the Cevennes, created by the river Tarn. The gorge starts near Ispagnac and end at Le Rozier. Because there is a road which runs at the bottom of the canyon, you can experience this gorge in a great way.
You can also go down the river by canoe.
The rocks around you are limestone, marl and dolomite. At the bottom, the gorge is about 30-500 m, and at the top, about 1-2 km.