The stream of Sompe originates in the territory of the village of Lagorce. The Sompe is a tributary of the Salastre, which is, itself, a tributary Ibie. The course of these two streams is entirely in the Lagorce ban.
Located about 10 kilometers from Annecy in France, the Gorges du Fier is one of the easier slot canyons to walk through. That’s because visitors go through the canyon on a railed walkway that is about 30 meters feet) above a river rushing below.