Christopher Dunn's central hypothesis: the Great Pyramid was not a tomb but a machine, a resonant power plant converting Earth's vibration into microwave energy through hydrogen chemistry in its chambers.
Documented
The stated system
Dunn's documented proposal: hydrated zinc chloride and hydrochloric acid vapors introduced through the Queen's Chamber shafts produce hydrogen, whose energy couples with the pyramid's resonance in the King's Chamber granite (quartz-bearing, piezoelectric on Dunn's reading) and beams microwave energy out through the shafts. The salt encrustations and chamber damage are cited as residue and explosion scars.
Assessment: Interesting: the hypothesis is complete and internally consistent. It is published speculation; no chemical or resonance evidence has validated the mechanism.
Stories
The machine aesthetic
The cultural observation: the power plant is the latest in a long line of Great Pyramid assignments matching each era's highest technology, granary in the age of agriculture, observatory in the age of astronomy, power plant in the age of electricity, and computer in the age of software. The monument is a mirror with unusually good stonework.
Assessment: Stories: the pattern of projection is documented across five centuries of pyramid literature.
Interesting claims
The tomb's own record
The mainstream file: quarry marks in the relieving chambers name Khufu's work gangs, mortar between stones carries radiocarbon dates clustering in the Fourth Dynasty (1984 and 1995 studies), and the structure sits in a cemetery of mastabas oriented to it. Egyptologists hold that the tomb interpretation is not an assumption but the context.
Assessment: Documented: the gang names, the carbon dates, the necropolis. The counterargument to the machine is not a theory, it is a filing system.
Sources and further reading
Christopher Dunn, The Giza Power Plant: Technologies of Ancient Egypt, Bear & Company, 1998 (claim's primary text)
Vyse, Operations Carried on at the Pyramids of Gizeh, 1840 (relieving-chamber quarry marks)
Radiocarbon dating of pyramid mortar, 1984 and 1995 studies (Fourth Dynasty clustering)
Giza necropolis excavation record, mastaba fields (context argument)
Worth asking
If a monument has no body, no inscription, and shafts aimed at stars, what counts as evidence of its purpose?