This walk is listed as “Circuit des Lacs” in the Randoxygène Haut Pays. It is at the head of the the river Var and starts at the pass of the Col de la Cayolle. This pass marks the border of the departments 06 and 04. A small part of the walk is on GR, the GR56B, but most of the walk is on local paths. The whole route is well trodden and is possibly the busiest in the 06. That said it is an easy walk with a gradual 500m climb and approximately 8km in length. Col de la cayolle [ Park Mercantour ] Distance from Nice : 60 min by bus