ANCIENT MASTERPIECES FOUND IN THE SAHARA - 1998
The engraved images of two giraffes, estimated to be some 7000-9000 yrs old, have been found atop a 50-foot-high sandstone outcrop in the Sahara Desert of northeastern Niger. One is more than 20 feet high. They are among the finest examples of African rock art found to date; the larger of the two images may well be the largest-known single prehistoric work of art in the world.