The West Potrillo Mountains WSA is located in southern New Mexico, approximately 30 miles southwest of Las Cruces in the Chihuahuan Desert. These mountains are a series of 48 volcanic cinder cones with small sand dunes, playas, and lava fields in-between. The vegetation consists of desert grasses and shrubs. Indian Basin, a natural depression at the southwest end of the West Potrillo Mountains, fills with water during the rainy season providing a temporary pond for ducks. Wintering raptors are found in high numbers due to a high small mammal prey base.