30/40 minutes. The Muga cliffs are a natural formation along the river course through Sant Llorenç de la Muga and at the entrance to the Darnius-Boadella reservoir. An area of many diverse flora and fauna, it is an unusual natural area. The Darnius-Boadella reservoir is one of the largest in the province of Girona and supplies water to many villages in the Alt Empordà region. The whole family can enjoy doing water sports here and taking long walks around it.