This documentary film by Pierluca Rossi recounts a journey to the southern Algerian Sahara, near Amguid, a small Tuareg village renowned for its unusual nearby crater. In the Tefedest massif, with its mythical summit, Garet el Djenoun, on the slopes of a vast sand dune rising to over 400 meters, one can practice an unusual sport: sandboarding, a new technique to try. Surprising speeds can be reached, and participants can familiarize themselves with the equipment of this new sport, perhaps paving the way for new practices.