Inca site in the Sacred Valley of Peru, an estate of Pachacuti built in the fifteenth century, and the location of the unfinished Sun Temple with its wall of six monoliths of red porphyry.
Why it is cited
The six stones were quarried at Kachiqhata, across the valley and some hundreds of metres higher, and were brought down the slope, across the Urubamba river and up to the terraces. The route is visible and littered with stones abandoned in transit, which is unusual: the site documents its own construction method by leaving the work unfinished. That is exactly the evidence the Lost Civilization Hypothesis argues is missing elsewhere, and it is one reason Ollantaytambo appears in the alternative literature less often than Puma Punku despite being more impressive as a transport problem.
The two masonries
Alternative writers often point to the difference between the fine polygonal work and the rougher fieldstone beside it as evidence of two builders separated by millennia. The Inca themselves distinguished masonry grades by function and status, and both grades appear in structures of the same securely dated period, at this site and across the Cusco region.
Connections
Puma Punku · Tiahuanaco · Lost Civilization Hypothesis · Fingerprints of the Gods · Graham Hancock · Ancient Machining · Nazca Lines