The entrance is a crawl of 2.50 m wide by 0.90 m high and 10.50 m long, which opens out through a narrow passage at the start of the fissure, 1.50 metres above the level of the entrance, leaving a little before it a chimney that appears not to continue. The joint has an average width of a little more than half a metre along the whole cavity, a size that does not hinder the passage at any moment.

After the narrow passage we find ourselves before a broken vertical drop of 46 m according to the GELL, and of 55 m according to the GIEM-Montblanc. The bottom is of compact earth, on a steep slope, and appears to end after a few metres in a S direction where the fissure collapses and remains pending exploration. In a N direction, a drop of 6 m according to the GELL and of 11 according to the GIEM, which can be descended in opposition, taking care not to slip on the polished wall. At this lower level we begin to find blocks, as well as the last 11 m pitch, with three medium-sized blocks wedged between the walls. The ramp base ends up becoming impenetrable due to the narrowness of the fissure. At the final point, the GELL assigns it a depth of -63 m, while the GIEM places it at -80 m.