Uracas (aka Farallon De Pajaros)
Size: 2.6 square kilometers (1 square mile)
Population:Uninhabited
Highest Point: 319 meters (1,047 feet)
Fast facts: Located 586 kilometers (364 miles) north of Saipan, the island has an active volcano which keeps its steep slopes smooth by frequent flows of lava and ash. The summit is crowned with white sulfur and at times dense clouds of yellow smoke and fire issue from the crater. The southwest and west shores are precipitous and bare. Highest point 1,047 ft.