Eric Baccega / Sulphur formation, Dallol Volcano, Danakil Depression, Ethiopia, March 2015.

Eric Baccega / Dallol hot spring with salt concretions coloured by sulphur, potassium and iron, Dallol Volcano, Danakil Depression, Ethiopia, March 2015.

Eric Baccega / Dallol hot spring with salt concretions coloured by sulphur, potassium and iron, Dallol Volcano, Danakil Depression, Ethiopia, March 2015.

Eric Baccega / Dallol hot spring with salt concretions coloured by sulphur, potassium and iron, Dallol Volcano, Danakil Depression, Ethiopia, March 2015.

Eric Baccega / Salt caravans made up of hundreds of Dromedary camels (Camelus dromedarius) and their pullers transporting salt slabs cut from Lake Assale to the Mekele Market, Danakil depression, Afar region, Ethiop...

Juan Carlos Munoz / Aerial view of the trench of the Great Rift valley, Tanzania, Africa, August 2009

Anup Shah / Aerial view of Lake Eyasi and The Great Rift Valley Escarpment, Tanzania

Yva Momatiuk & John Eastcott / White Rhinoceros (Ceratotherium simum) male, Lake Nakuru National Park, Kenya

Anup Shah / Aerial view of the Sugata river, Sugata valley in the Great Rift Valley, Northern Kenya

Anup Shah / Aerial view of Mabuyatom volcano, Lake Turkana, Great Rift Valley, Northern Kenya

Anup Shah / Flamingos on shores of Lake Logipi, Great Rift Valley, Northern Kenya

Anup Shah / Aerial view inside crater of Mt Longohot, Mount Longonot NP, Kenya