At this point along the GR400 walking pass, the volcanic rock forms a sort of porch that you then walk under. With a bit of imagination, you can make out the head of a lion in the rock above the porch, hence the name of this walking trail.
Follow the marked-out walking trail "La porte du Lion" from the hamlet of Lagoutte. The trail will take you through the “Chaos de Casteltinet”. Estimated 3 hour walking circuit. A detailed description of the trail is available at the Tourist Information Office.