Alpine canyon, very interesting, originally used by ice climbers in winter; consequently, several anchors are present that are absolutely unsuitable for canyoning, as they were intended for winter use only. The canyon is equipped in a very minimal/expedition style, so bring a drill and rebolting material if you plan to descend it.

Alpine canyon, very interesting, originally used by ice climbers in winter; consequently, several anchors are present that are absolutely unsuitable for canyoning, as they were intended for winter use only. The canyon is equipped in a very minimal/expedition style, so bring a drill and rebolting material if you plan to descend it.

The approach follows the well-known Scale del Miller trail.

There are two key sections to tackle: the first due to its complexity, the second because it relies on an anchor that is truly unsuitable for canyoning. Key section 1: The 6th rappel starts from a single anchor on river right and has a rebelay about 15 m lower down on river left on a double anchor. Midway there is a deviation with an abandoned carabiner that must absolutely be used; otherwise, the rappel line leads completely into the water and far away from the rebelay anchor. Missing it forces you to descend all the way to the bottom, making rope retrieval extremely difficult. At the rebelay you will also find a third hanger that must not be used, as its bolt spins. Key section 2: Rappel 8 is rigged on a sling with maillons wedged under a boulder on river left, and its rebelay is about 20 m lower, still on river left, built on an anchor that is embarrassing for canyoning and only useful for ice climbers. We had to leave a carabiner to create a proper rappel ring. This drop also has several major rope rubs and is done entirely with your feet in the water (about 100 L/s during our descent), so it is advisable to rig a releasable system from the boulder for the last person. Anchor sequence: 1. sling and maillons on central boulder 2. single, river left 3. sling and maillons on natural anchor, river right 4. double, river left 6. single, river right 7. single, river right with deviation on river left 8. double, river left 9. sling and maillons on boulder, river left 10. double, river left (ice-climbing anchor) 11. double, river right 12. single, river left 13. double, river left 14. single, river right

Hydraulic works: yes, presence of a dam upstream, but its characteristics are unknown and there is no information about possible water releases.