Avenc M-11

The fissure is located in Montcortès, in the Baix Pallars. From Senterada one must head towards 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 an asphalted 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 quite difficult, since at present (2011) only the painted name is preserved in the M-1 and M-11; from the rest of the cavities any sign identifying them has disappeared, and the GEB does not report any kind of guideline followed in order to identify them. Therefore, apart from these two cavities, it is unknown which coordinates correctly correspond to each of the others; it has been considered appropriate to mark the rest of the cavities with some coordinates situated between M-1 and M-11, bearing in mind that apart from the M-8, which is located a couple of bends before reaching the flat area, the rest of the 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.