my granddad helped 'restore' Tassili paintings in the 50s. turns out some were faked.

Family story, take it for what it's worth. My grandfather did odd survey work in Algeria in the 50s and always told us about the painted caves at Tassili n'Ajjer — the Sahara plateau, thousands of rock paintings, and one huge round-headed figure ~5m tall that the Frenchman Henri Lhote christened 'th……