Perim ([Barīm]) is a volcanic island strategically located in the Strait of Mandeb at the southern entrance into the Red Sea, off the southwestern coast of Yemen, at . It has a surface area of 13 square kilometers and rises to an altitude of 65 meters. The island has a natural harbor on its southwestern coast, but there's only scarce vegetation. The absence of fresh water on the island has always been one of the major difficulties impeding permanent settlement. Sometimes in the geological… (More on Perim)