News Earth Buried Saharan rivers might have been early expressways Humans might have migrated across the arid region along three once-lush waterways By Erin Wayman September 12, 2013 at 6:02 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Print (Opens in new window) Print Three rivers now interred beneath heaps of sand in the Sahara Desert might have been the superhighways of the Stone Age. Simulations reveal that the rivers, each about as big as the Missouri or Rhine River, meandered across the Sahara 125,000 years ago.