Ancient stone technology at Sacsayhuaman
Sacsayhuamán (also known as Sacsahuaman) is a walled complex near the old city of Cusco, at an altitude of 3,701 m. or 12,000 feet.
The site is part of the City of Cuzco, which was added to the UNESCO World Heritage List in 1983.
The wall or rampart is the most impressive section, built with enormous carved limestone boulders, this construction has a broken line that faces to the main plaza called Chuquipampa which is a slope with 25 angles and 60 walls.The biggest carved boulder of the first wall weighs about 70 tons and like all of the other rocks was brought from a quarry called Sisicancha, three kilometers away and where there are still rocks that were transported part of the way. Each wall is made up of 10 fronts with the most important ones known as Rumipunco, tiupunku, Achuanpunku and Viracocha punku.
The stones fit so perfectly that no blade of grass or steel can slide between them. There is no mortar.
They often join in complex and irregular surfaces that would appear to be a nightmare for the stonemason.
When the Spanish conquerors arrived first to these lands, they could not explain themselves how Peruvian “Indians” (ignorant, wild, without any ability of logical reasoning, one more animal species according to conquerors) could have built such a greatness.
Mystery of stone Walls at Sacsayhuaman and other ancient sites in Peru
Unknown methods of stone processing and traces of mysterious tools at archaeological sites in Peru.
Mystery of Cyclopean Walls at Sacsayhuaman SOLVED!
This is the best explanation available today: Melted or moulded stones of the walls.
Source: Le Moment Curieux ( on YouTube).
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The moulded stones of the walls could alternatively be created by pouring “concrete” ( instead of melting )…
Both methods would provide similar end results (except for the vitrified pieces).