Leaving from the Champataule lake in the Reyssouze valley, a stroll towards the But forest.
There are several possible routes, depending on your preferences.
Return trip possible to the Etang de But (ENS).
Worth seeing: Le Jugnon / la Durlande / la Reyssouze / Champataule Sud-Nord / Calvaire des Merciers / Allée Royale / Moulin Peloux.