IT’S a place so remote it makes the middle of nowhere seem bustling. Yet for Stefan Kröpelin, it has an irresistible draw. Almost every year for four decades…
Earth
Nomad’s land: Journey into the rugged heart of the Sahara
The mountainous Tibesti holds clues to a verdant past – but terrain and politics have kept scientists out. Exclusive photos show what geologists found this year
By Sean O'Neill
6 July 2016