Meeting point, departure, and arrival at the Main Entrance of Mont Saint-Michel (to the left of the entrance porch) for a historical and bucolic walk with thrilling moments as the water rises (optional), lasting about 2 hours and covering 2/3 kilometers. Barefoot and wearing shorts, with appropriate upper-body clothing for the weather of the day, we will discover and test the quicksand of the Bay of Mont Saint-Michel during a "Tour du Mont" walk, while safely waiting for the return of the Phenomenal Tide