A threshold Revun (Burkan is its old place-name) is the main and most unexpected obstacle of a peneplain Iset-river, 350 m in length. Raftmen compete and train up and down Revun river, and cragsmen experience Beclenishev’s rocks which surround them.

Revun is a perfect variant of a weekend’s walking tour for the outdoor recreation. A clearing before the threshold is a good scenic viewpoint. There is a little but the most picturesque craggy site of the Iset’s canon below Revun. 20-25 m long cliffs stretch almost continually right or left in various way: Stone’s Pole, Minin’s mountain, Kopeshka, Gushin’s stones, Fortress, Hare’s mountain.