For a small loop this packs some great descent in it.

Grind up the Couchons gravel road for 5 km. Go past the turn off for the goat cheese farm "Le Rouchas". After the next righthand hairpin bend turn off right on footpath signed for "Col de Robines". Keep to the right of the field and after a short descent climb hard through the field and into woods via the Ravin d' Aigumond (short bit of pushing unless you are super fit).

At the Y juction of forrest trails take the right downhil. Great single track descent through woods, really flowy then a few switchbacks. (take care to avoid the hidden obstacles in the long grass)

At the large forrest trail turn right (away from col de robines and follow the double track and then single track back to the Couchon road. VTT Route marked (11).

Short but sweet and great if you just want a quick blast.