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LESSON 5 · Mysteries of the Nile

Ramps, Water, and Ingenuity

The most widely accepted theory involves some form of ramp system. An external straight ramp would need to be over a kilometer long, requiring almost as much material as the pyramid itself. Internal spiral ramps solve this problem but leave questions about corner turns.

New technologies keep revealing pyramid secrets. Muon tomography — using cosmic ray particles to scan dense structures — discovered a previously unknown void above the Grand Gallery in 2017. Thermal imaging has identified anomalies suggesting hidden chambers.