Sahara hides an 'underground ocean' of ancient water trapped for millennia

Beneath the sands of North Africa lies a hidden reservoir of ancient water, described as an "underground ocean." This vast quantity of water is trapped within porous sandstone layers, extending across areas larger than many countries. Scientists estimate that some of this water seeped into the ground when the Sahara was a wetter region, and it has remained locked away for tens of thousands of years, surviving prolonged droughts.

The sheer volume of this ancient water is immense, leading to its comparison with an ocean. This discovery provides a unique window into the Sahara's past climate and geological history. It also raises questions about the potential for accessing these deep water reserves, which could have implications for the region's future water security.

Researchers are studying the origins and composition of this subterranean water. Understanding how it was preserved for millennia offers valuable data for climate modeling and hydrological studies. The findings underscore the dynamic environmental changes the Sahara has undergone and highlight the hidden resources that may exist beneath its arid surface.