CR 17

Narrow 4-metre Ressaut (drop) at the entrance, leading to a fissure bristling with ledges overlooking the P22. At the bottom of the shaft, a small horizontal conduit is impassable but can be reached via a low passage high up on a slope of fill. A tiny low chamber precedes a crawl that immediately narrows. At the foot of the shaft, another low, enlarged conduit leads to another crawl descending rapidly and choked, with a low point at -29 m. Above this passage, a short 3-metre climb leads into a joint. After another constriction, one emerges into a 2-metre Ressaut (drop) closed on all sides by blocks.

Into the crawl preceded by the tiny low chamber comes a trickle of water, accompanied by a slight draught blowing in summer and drawing in winter, which would suggest there must be an upper entrance somewhere.

Go outside the fissure to descend the shaft, which is immediately comfortable (a parallel conduit rejoins the main one). At the bottom of the shaft, three possibilities: continue the descent for a few metres to reach the small impassable horizontal conduit; at the foot of the shaft, take the other low, enlarged conduit; above this passage, make a short 3-metre climb into the joint.