 It lies on an underwater mountain range which continues to Beata Island (about 12 km away, separated by the Alto Velo Channel) and the 
southwestern coast of the Dominican Republic.It has an area of 1.02 km² and is 1.4 km long, being oval in shape.It is located about southwest of Santo Domingo, and south of Pedernales, making it the southernmost point of the Dominican Republic, a distinction sometimes claimed by Beata Island.