Rondo Island ( or ), is the Indonesia's northernmost territory, located in Andaman Sea with 0.650 km² in area and elevation of 35 m above sea level. The island is one of outlying island of Indonesia in Aceh province of Sumatra region. It is administratively part of village in of Sabang City, which administration center is located on Weh Island south of Rondo. Rondo is 50 km offshore from Indonesia's Sumatra mainland. This otherwise uninhabited island, accessible only by boat, has an Indonesian military outpost with a heliport and blue-roofed barracks, an adjacent lighthouse complex with a red-roofed lighthouse keeper's house and a white skeletal lighthouse topped with a viewing gallery and lantern.