The Oval Engravings of Nabara 2 (Ennedi, Chad)
By revisiting the Nabara 2 shelter in the g35 coupe fender southern Ennedi (Chad), some previously unreported paintings and a whole set of unexpected oval engravings were surveyed.These engravings, internally decorated with patterns of lines, some featured by a single longitudinal element or a sort of reticular structure, make Nabara 2 an unparalle