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Algerian Quarry Fields, the Sphinx & Lesotho's Dikes with David Stig Hansen — Part 2 of 3 | Classics Rotation
David Stig Hansen takes the host across Algeria's Tassili n'Ajjer, the Grand Canyon, Morocco and Lesotho on Google Earth, pointing out straight lines, rectangles and 45-degree cuts he reads as ancient quarrying and haul roads. If you are curious about overburden dumping, "quarry fields" and why some researchers doubt that every long dike is volcanic, this middle part is the heart of his case.
In Algeria, David shows a straight-line area he calls "the Matrix," suggests that some dikes were used as transport roads, and measures a worked region about 76 miles across, with a large rectangle and a…
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