New Scientist       

Secret Sahara reveals fairytale formations and ancient lakes

By Sandrine Ceurstemont

You might not expect to see crocodiles, baboons or giant mazes made of rock in the middle of the Sahara desert. But the little-explored Ennedi plateau in north-east Chad is home to unique geological features and ancient lakes, remnants of the region’s wet period, which ended 4000 years ago.

Last October, Stefan Kröpelin at the University of Cologne in Germany and his Chadian research partner Baba Mallaye travelled to the remote region with a small team to take samples at many sites for the first time.

 Read more ...