At the Tour d’Auvergne exit, towards Bagnols, from the road you'll spot a large waterfall on the Gagne River.
Pont-de-Pierre waterfall (La Tour d’Auvergne)
First it cascades down a 15 metre granite step, before breaking onto large blocks, amid the trees and moss-covered rocks. The Pont-de-Pierre waterfall owes its name to a Roman bridge. Indeed a Roman road passed through here and on through the meadows to the hamlet of La Gagne. When the road was built, very nearby they found Roman pottery and coins, which are now kept at the Bargoin museum in Clermont-Ferrand. Downstream of Le Pont-de-Pierre the Gagne and Burande merge. Past this confluence you’ll be able to see a waterfall with four branches separated by huge rocks.