Through an entrance of moderate dimensions one enters a first chamber which has another opening to the outside in its ceiling. The cavity consists practically of a single gallery, of meandering layout and generally ample dimensions, comfortable to traverse.

In the last stretch of the gallery, on the right, a branch appears, slightly ascending and about 50 metres long. Halfway along it there is a small shaft developed among the sediments.

Halfway along the main gallery, at a point of smaller dimensions, there is an open iron grille which, so they say, marks the boundary between the municipalities of Prullans and Bellver de Cerdanya.

The Xarxa de Pous is located in the main gallery, once past the shaft that opens in the middle of the gallery. After 22 metres from the aforementioned shaft, on the right-hand side of the gallery following the entrance-to-end direction, we find a small opening that gives access to a little 4-metre shaft, with a narrow passage that leads to a small chamber where the openings to three new shafts open. The one of larger dimensions, which is situated to the W, by means of a short ramp gives access to a second chamber with a fairly steep floor, where the openings to three more shafts open.

All these shafts are of minimal dimensions, with depths ranging between 3 and four metres and are totally independent of one another.

The walls are covered by beautiful lithogenic formations.

The formations in this sector are found grouped in very specific zones and of reduced size; in the rest of the sector a rather corrosive morphology predominates.