Below Sahara there is a large groundwater resource, called The Nubian Sandstone Aquifer System, left from its former watery conditions. Find more details here:
Sahara
The Nubian Sandstone Aquifer System
Scientist reported in Geophysical Research Letters now that they used a non stable Krypton isotope to measure the age of this water.
It turned out that it is between 200.000 an 1.000.000 years old. So human forefathers must have senn the green Sahara !
Verfasst von alex am March 2, 2004 11:43 AM