Going along the road from Alcover to Capafonts (TV 7041), before reaching Mont-ral and a few metres before reaching Km. 10, an initially asphalted track comes off, which crosses the Pla de les Perdius. We will always continue straight, ignoring the forks, until the track ends in a widening of it in the middle of the forest, on the ridge of the serra d'en Clarà. From this point and in a N direction a path comes off that leads us to the avenc del Cabirol, after going down a short but steep slope, almost reaching the avenc del Cabirol which is right next to us on the left, we find on the right a cairn that indicates the start of a half-lost path that runs through the interior of a kind of wide natural trench, after about 90 metres we will see on the right on a rocky wall, the cave-shaped entrance of the avenc de la Carbonera, we will follow the path leaving this rocky outcrop on the right until reaching the upper part where the path begins to descend, at this point we will head to the right, where we will find the rocky wall with various access points, forming a kind of cova baixa but with no continuation, in the highest part we find the access of the avenc M-6.