Amoissa, also known as Abida, or Dabita, is a caldera that is east of Ayelu volcano and is considered its twin. Steam still sometimes leaks out around the caldera walls, suggesting that hot rocks exist at depth.
Sources of Information
Ref: Richard JJ, Neumann van Padang M 1957, Africa and the Red Sea. Catalog of Active Volcanoes of the World, Rome: IAVCEI 4:24-25.
Charles A Wood- Volcano World
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