acockworkorange - 1.4yr The area of Lake Chad experienced four heydays between 39,000 BC and 300 BC, leaving thick diatomaceous earth and lacustrine deposits in the strata. This has been called Mega-Chad. 12
Neurologist in geography
Aerial Photo of Lake Chad
Mega-chad and its neighbouring virgin lands
The virgin Sahara and the Mega-Chad fertile lake.