The small, oval-shaped island in this NASA Landsat image (with north to the top) is Jebel at Tair. This 3-km-wide island is the emergent summit of a stratovolcano that rises from a 1200 m depth in the south-central Red Sea. Youthful lava flows from a steep-sided central vent, Jebel Duchan, cover most of the island. The island is of Holocene age, and explosive eruptions were reported in the 18th and 19th centuries.