We bring you the latest in our ongoing series of stories about lake-related mysteries: apparently, a large, deep lake has unexpectedly (who ever expects this sort of thing?) materialized in the middle of the Tunisian desert.
The lake is just over a hectare in size and 10-18m deep. It is presumed that a small earthquake fractured a natural dam holding an artificial reservoir allowing the water to reach the surface. However, the aquifer has not been found – the theory relies more on the absence of other credible explanations than anything else.