The cavities are located at Montcortès, in the Baix Pallars. From Senterada one must head to the Pobleta de Bellveí, where a narrow road is taken to the right as far as the estany de Montcortès. From the E side of the estany a paved track leads off towards Peracalç; on reaching the junction with the track that goes to Montsor, this is taken to the right, suitable for any vehicle, and after 1.7 kilometres one arrives at the flat area where the cavities are found. This flat area is on the left of the track and the spot is easily recognised because the track makes a sharp bend to the right and also to the right there is a large temporary pool of water used for watering animals.

The identification of the cavities is rather complicated, since the painted name is preserved only on M-1, M-11 and M-35; from the remaining cavities any sign identifying them has disappeared, and the GEB gives no information about any guideline followed in order to identify them. Therefore, apart from these cavities, it is unknown which coordinates correctly correspond to each of them; it has been thought appropriate to mark the remaining cavities with coordinates situated between M-1 and M-11, bearing in mind that, apart from M-8, which is found a couple of bends before reaching the flat area, the remaining cavities are situated within a radius of less than 200 metres from this indicated point; in some cases the coordinates correspond to hole entrances, but it is unknown whether they correspond to the same ones.

As for M-1, this is found about 70 metres away, in the first line of trees on the left of the large meadow that lies on the other side of the track; there there is a collapse and, among the box trees, the entrance to the cavity.