The volcano is surrounded by a huge saline area, the edges of which are studded with a multitude of fairy chimneys where gases have broken through. The sulphuric hot springs bubble at boiling point. The salt of the Danokil Depression, 136.8 meters below sea level, mixes with volcanic minerals such as sulfur, to create terraces and unique, other worldly concretions. Geysers and chimneys adorn the site throughout.