From the 15x10 entrance, the lower lip gives access to a vertical drop of between 13 and 15 metres, depending on the point of rigging, since there are several fixed anchors. At the foot of the drop one lands in a notable chamber nearly fifty metres long by 30 wide that descends in a ramp for some ten metres of drop. The floor of this chamber consists of an accumulation of small blocks covered with mosses and a layer of jackdaw excrement that makes it especially slippery.

From the chamber we can continue along two itineraries that we could call the Via Fonda and the Via Remuntant.

The Via Fonda can be reached by following the left-hand side of the chamber. We can descend the first pit below a large block, or else climb a few metres where we find a handline by which one accesses the drop. The first section is 10m and after a small ramp floor we find a second pit of 8 metres. At its base one can follow a small room and a gallery where we find a rigged climb that leads to no practicable continuation. The maximum level of this sector, according to the survey by Lloret/Ubach, is -36 m, corresponding to the -42 of Devenat/Esteve.

A new access in this sector is, once at the handline by which one accesses the drop, to continue along the handline, entering a descending gallery full of jackdaw guano, at the end of which, on the left, we find a pit that takes us directly to the small room; at the bottom of it and at the maximum depth, we make a small climb that has been rigged and enter through a narrow section into a small gallery, then a pit of some 3 metres, from which we enter a sunken chamber that continues through low passages and narrow sections until it is no longer passable.

From the entrance of the sunken chamber, in its upper part we find a small crawl that at the end is very narrow, and which brings us back to the small room where we made the small climb.

Back at the base of the first pit, if we follow the south-western side, we find an ascending rope to access the Via Remuntant; this has a total length of 70 metres. A first vertical section of some 5 metres, and a kind of ramp on a cornice rigged with a handline, places us at the western end of the chamber almost at its ceiling.

On reaching the end of the ascending slope we are on a ledge that forms a magnificent balcony over the chamber. Here we find several jackdaw nests, and one can continue through a low passage until reaching a widening with many formations, where we find two continuations. The first, descending between flows, opens a blind pit of 10 metres (muddy ramp and vertical of 8 m.). The second option begins through an elevated crawl between concretions, which leads us to a small room and after a second crawl we reach, by means of a pit of some 5 metres, a small room profusely decorated with all kinds of speleothems.

The second option of the Via Remuntant begins through an elevated crawl between concretions, which leads us to a small room and after a second crawl we reach, by means of a pit of some 5 metres, a small room profusely decorated with all kinds of speleothems.