Libya rooms
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Garamantes foggaras Underground water tunnels in the Fezzan, in use from about 400 BC to 700 CE, and the open question of who designed them.
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Tadrart Acacus Thousands of paintings and engravings in a Saharan massif, dated by the listing from 12,000 BC to 100 CE and by a short chronology to a much later start.