Almost all of the islands in the Red Sea are basically uncovered reefs. There is, even so, a group of Lively volcanoes just south with the Dahlak Archipelago (15° 50′ N), as well as a recently extinct volcano to the island of Jabal Al-Ṭāʾir.The Red Sea valley cuts from the Arabian-Nubian Massif, which was a continuous central mass of Precamb