The Dallol volcano, or rather the Dallol hydrothermal field is located in a remote part of the northern Danakil Depression in NE Ethiopia. It is the lowest known sub-aerial volcanic area in the world. Dallol is one of the world's most spectacular landscape: a vast area of uplifted thick salt deposits affected by intense fumarolic activity, probably caused by an active volcanic system beneath several kilometers of evaporation salt deposits. Dallol is said to be the hottest place on the planet, with average annual temperatures well above 30 deg C.