A square entrance of just over one square metre leads down a shaft 14.40 metres deep; this, 5 metres above the floor, widens, cutting into one side of a chamber of about 8x7 metres. Right in the middle of it we find a large block that forces us to go round it in order to move about the chamber.

On the E side of the chamber we find a downward passage, which leads us into a gallery that turns towards the N; at the end of this short gallery and before climbing over a step of just over one metre in height, we find a dome 5 metres high. Once on top of the step, we find a shaft that descends steeply, although no equipment is necessary, and that takes us to the deepest point of the cavity, -23 metres.

Back in the chamber, from the S side a short sloping gallery leaves and ends after a few metres.

On the W side of the chamber, and at its lowest point, we find a low-roofed gallery, less than one metre high and about 6 metres long; at the end it turns left and leads us into a fissure running NE-SW and 13 metres high. On the NE side and below a block wedged in the walls, it is possible to climb more than 6 metres, reaching an upper level that continues on both sides of the fissure; towards the SW, on the other side of the shaft formed by the fissure, it continues for 6 metres and ends, while on the NE side it ends after 2 metres, but on the right there is a very narrow passage that divides into two, both of which connect with the roof of the large chamber about 5 metres up, and the base of these ends very close to the passage that leads from the chamber to the upper part of these shafts.

When the Espeleoíndex team visited it (19 November 2011) there was no kind of rigging and they had to place various parabolts to carry out the descent.