Departing from the Etruyère lake, you will follow the stream through a number of villages, past the church at La Tardière and the mill at La basse Gourbillière.
You'll be following part of the "Mélusine" GR.
Starting point: Étruyère lake at La Tardière (Terval)
Signposts: yellow - anticlockwise
Elevation gain: 191 m
At the start: car park, toilets and lunch facilities in summer