Nunivak Island (Central Alaskan Yup'ik: Nunivaaq; Nunivak Cup'ig: Nuniwar) is a permafrost-covered volcanic island lying about 30 miles (48 km) offshore from the delta of the Yukon and Kuskokwim rivers in the US state of Alaska, at a latitude of about 60° N. The island is 1,631.97 square miles (4,226.8 km2) in area, making it the second-largest island in the Bering Sea and eighth-largest island in the United States. It is 76.2 kilometers (47.3 mi) long and 106 kilometers (66 mi) wide.