Tadrart Acacus is a World Heritage Site, well known thousands of prehistoric cave paintings, dating from 12000 BC to 100 AD, and its alien-like, jagged landscape of bizarre basalt monoliths, towering granite mountains (the highest point being 1506m), endless wadis, and mushroom-shaped rock formations. The rock-art sites of Tadrart Acacus are found in a vast area of desert landscape around the town of Ghat in south-western Libya.