The entrance is in the form of a rock shelter, which makes it difficult to see from a distance; this is also helped by the fact that it is slightly elevated on the crag. The mouth is about 8 metres wide and 3 high, and quickly narrows to form a gallery 11 metres long which at 8 metres reaches its maximum narrowness (0.50 x 0.70). The gallery gives way to a fairly wide ramp with a relatively flat ceiling and roots hanging from it; the rigging starts just at this ceiling. The ramp, 16 metres long, has a ledge in the middle where it can be re-rigged and becomes increasingly steep, and leads to a pit 14 metres deep with a width of 1.8 x 7 metres. Descending the pit, one reaches a wide lateral gallery of the main chamber of the cavity. In a SE direction there is an initially heavily decorated gallery (Sala Blanca), which first rises then descends again while narrowing and ends at 15 metres from the pit. Returning to the base of the pit and heading W, the gallery widens until, after 10 metres, it gives onto the chamber of the cavity. This is 32 metres long and reaches a maximum height of 24 metres, with an average width of 5 metres. Towards the S, the chamber descends until it ends in a couple of narrow, short superimposed galleries, the lower of which reaches the maximum depth of the cavity at elevation -37, ending choked by sediments. On the opposite side, to the N, there is a fairly flat crawl 14 metres long, which follows a couple of joints parallel to the generatrices of the main chamber and ends in a collapse. On the same N side, climbing a flowstone, one reaches a chimney that gives onto a gallery already almost 15 metres above the floor of the chamber; this gallery climbs until it gives onto a new chimney that ends up becoming impenetrable.

The most striking feature of the chamber, and of the whole cavity, is the large flowstone on the W wall. This flowstone occupies the entire height and is partially separated from the wall itself, forming a ledge at 12 metres height in the shape of a pulpit.

The pit is re-rigged at the same head and also at 5 metres from the bottom.

The sediments are full of encrusted bone remains, notably the complete remains of a goat right in the middle of the chamber, surrounded by a circle of stones to make it more visible and protect it.