newworldafro
DeeperThanRapBiggerThanHH
Official Post from the Khafre Project Team communications person, about using Doppler Tomography (top level satellite ground penetrating radar technology and satellite imagery) to see these subsurface images extending down to 2 kilometers or 1.2 miles ......21st Century Archaeology 
More detailed explanation of the images from the actual paper on this topic
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Additional Posts

More detailed explanation of the images from the actual paper on this topic
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Additional Posts
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