Around the Source Du Lison

The route starts at the well-developed parking lot near the source, which of course must be visited first: the short path into the source cave is an absolute highlight, as is the karst basin “Creux Billard.”

Saturated with impressions, the path goes uphill over well-developed trails and also enchanted paths (along the way you can visit a 300-year-old oak) up to the rarely trafficked road to Crouzet-Migette. Unfortunately, we must follow this for a few hundred meters (according to OpenStreetMaps there may also be a trail through the forest - but it was too overgrown for us) until the blue-yellow marking leads us back onto a service road. A small, wild path (not shown on the OutdoorActive map!) is well marked and leads us to the “summit”. We pass the farming village of Crouzet-Migette and from there follow the perfectly marked GR through forest and meadows (in June 2022 the grass stood knee-high and was crawling with ticks!). The descent is quite steep but unproblematic - and the remaining return path along the Lison is a leisurely walk - with the final highlight “Grotte Du Sarrazine.”