Four trails of 1,000 to 1,800 metres, developed and accessible to all, young and old. They constitute the arrival of the Grande Traversée du Morvan à VTT between Avallon and Autun via Saulieu. Starting point at the Croix de la Libération and arrival at the Rivault farm in Autun. Four levels of tracks: the green track "La Reviret", playground for beginners and adapted to all-terrain vehicles (slope from 6 to 8 %); the blue track "La Rivault", to progress and have great sensations (slope from 8 to 10 %); the red track "La Saint-Sébastien", for the most experienced (slope from 10 to 12 %); the black track "La Chicole": for the very experienced (attention important danger for not experienced riders). The descent of the slopes is subject to the minimum wearing of a helmet. Please bring your own equipment: adapted bike, helmet and gloves.