The piste network in Les Arcs is fairly dense, and off-piste opportunities are numerous. With a guide, though, some big adventures are possible. Particularly recommended are off the back of the Aiguille Rouge down to Villaroger, or off the back of the Bellecote glacier (from La Plagne) down to Nancroix valley, just below Peisey, which is linked by free shuttle bus. It is advised that both routes be only attempted with a guide and appropriate avalanche equipment. Off-piste routes from Tignes to the Les Arcs area are also possible. The book Les clés de Paradiski by Didier Givois (in French but with summaries in English) includes very good descriptions of the possibilities.