This pyramid's entrance features a unique plug block mechanism - two holes in the floor show a beam was inserted at an angle, likely releasing four massive stone blocks to seal the passage. Two of four original blocks still remain in the gallery, having failed to slide down.
Interior passage system with plug blocks discovered
Egyptunverified
Key facts
- Entrance on northern face, 1.1m above base, entrance corridor is 1.2m x 1.2m
- Descending passageway extends approximately 11.66m at a steep 34° angle
- Two holes in the ascending passageway floor (22cm diameter) - western hole 29cm deep, eastern hole 14cm deep
- Holes show beam was inserted at angle then moved straight - purpose unclear
- Ascending passageway has angle of 32.3°
- Passageway height increases by 1.1m at 5.65m to create gallery for plug blocks
- Two of four original plug blocks still remain in the gallery - they failed to slide down
- Floor grooves (14cm wide) correspond with holes in western and eastern walls 70cm above floor
- Grooves likely related to mechanism that released the plug blocks
- Four plug blocks would have filled entire ascending passageway if successful
Site mentioned
Sources
(PDF) Charles Piazzi Smyth & The Great Pyramid, A Layman's guideresearchgate.net
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[PDF] Special Specification 7024 Automatic Storm Water Pump Stationftp.dot.state.tx.us
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[PDF] Engineering Geology Field Manual - Bureau of Reclamationusbr.gov
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