Erlengarria XII

From the facilities of the recreation area of the Leurza reservoirs, head toward the dam of the second reservoir along a track heading southwest, following the left-hand branch after the fork. Once past the dam, take the track on the right that skirts the upper reservoir, crossing the river of the Erlengarria spring 13, until reaching a new ascending track on the left. Following this, one arrives at a change of direction to the right, which leads to marker 37. Once at the marker, continue along this track, ignoring on the left a steeper path, for about 500 metres, then taking a direction toward the karst to reach the cavity after gaining about 40 metres more in height up the hill.