The cavity is structured along a joint that on the outside is about 5 metres long; at one of its ends is the point where the last digging was carried out, which gives access to the interior through a narrow passage that increases in size as we descend. A first 4-metre drop places us on a ledge where we find some debris from the outside. From this point we are on the vertical; an aerial section places us on a new ledge. At the end of the gallery we find two new drops of 5 and 6 metres respectively that give access to a room of considerable dimensions. Further on there is an 11-metre-deep pit and, at the other end, a steeply sloping gallery that ends in a 7-metre pit, which places us at -130 metres depth. The pit continues descending until reaching the -153 metres level, where the current water level is (3-9-2016); here begins a submerged and quite steep gallery that places us at the -188 metres level, where the head of a new pit that continues descending can be seen.

In a descending gallery we find some formations and the floor covered with small concreted gours.

After a short distance we reach the first permanent sump, about 3 metres long, which forces us to do a small apnea. In rainy periods the area of a low-roofed gallery full of mud remains flooded. At the -153 metres level is the current water level (3-9-2016). The exploration of the cavity is conditioned by the water level, which is highly variable over short periods of time, and taking into account the degree of danger depending on the weather conditions.

Once past the narrow access passage, a first 4-metre drop places us on a ledge. From here, a re-rigging allows us to traverse to the other end, seeking the widest part. From this point we are on the vertical; an aerial section places us on a new ledge, to the left of which there is the option of continuing to descend down a steep slope, at the base of which and after overcoming a couple of drops a descending gallery begins. At the end of the gallery we find two new drops of 5 and 6 metres respectively that give access to a room of considerable dimensions. At the other end we find a new low-roofed gallery full of mud. After a short distance we reach the first permanent sump, about 3 metres long, which forces us to do a small apnea. From this point the gallery climbs steeply for a few metres until it becomes horizontal; at the end of this section we find two continuations, one at the base of the gallery, where there is an impassable passage that communicates again with the gallery at a lower point, and the other at the upper part, where a drop must be overcome; once past this, the gallery descends in slope until it reaches an 11-metre-deep pit. At its base we find a chimney that communicates with the impassable passage indicated above; at the other end begins a steeply sloping gallery that ends in a 7-metre pit, which places us at -130 metres depth, the point where the maximum level of access achieved on 7 September 1993 was reached. From the end of that exploration, the pit continues descending until reaching the -153 metres level, where we find the current water level (3-9-2016); here begins a submerged and quite steep gallery that places us at the -188 metres level, where the head of a new pit that continues descending can be seen.