Merzouga is a small village in southeastern Morocco, about 35 kilometres southeast of Rissani, about 55 kilometers from Erfoud, and about 50 kilometers from the Algerian border. The village is known for its proximity to Erg Chebbi, a Saharan erg, and it is for this reason a part of the itineraries of many tourists visiting Morocco. Merzouga has the largest natural underground body of water in Morocco.