- The Danakil Depression is one of the world's harshest environments
- New research carried out there could help us understand life on Mars
(CNN)At the juncture of three tectonic plates in northeastern Ethiopia is an other-worldly and sunken plain. The heat quivers here. Rock formations are colored by minerals in oozing volcanic psychedelia. The Danakil Depression is one of the hottest and most hostile places on earth.