Cabo Rojo (Spanish pronunciation: [ˈkaβo ˈroxo]) is a municipality situated on the southwest coast of Puerto Rico and forms part of the San Germán–Cabo Rojo metropolitan area as well as the larger Mayagüez–San Germán–Cabo Rojo Combined Statistical Area.Cabo Rojo (Red Cape in English) derives its name from both the reddish color of its salt-flats and the reddish tint that characterizes the seaside cliffs along its southern coast.