The easternmost area of the cavity, the first reached from the path, is a rock shelter about 10 metres deep with a section of 5 x 2 metres, structured in a very clayey stratum.

Continuing westwards, one passes through a short 5-metre corridor with a section of 1 x 1 metres that leads to the vestibule of the main cavity, which has a passage of about 30 metres and an average section of 7 by 1 metres; the floor is occupied by a succession of stepped gours, branching in the final stretch along two generating joints. At 12 metres from the entrance we find ourselves before a laminar passage, on the right-hand side, which continues for some 30 metres more; the floor is covered by clayey sediments that eventually fill the conduit.

Back in the main vestibule, at the western end, a narrow conduit with an average section of 0.5 x 0.5 metres and a passage of 18 metres leads us to the other side of the crag.

The floor is occupied by a succession of stepped gours, normally full of water.