Brilliant, and Ancient Technology

These walls in Peru are earthquake proof and modern tool proof. How was it done?

This is the famous 12 sided stone in Hatum Rumiyoc Street, Cusco, Peru.  It is 1,000’s of years old, carved with a technology long forgotten by man, and is in fact lost to modern science.  We do not know how it was done, and we do not know who did it.  It wasn’t the Incas. There is simply nothing in their technology capable of achieving it.

The stone is carved from diorite which is a very hard, very rare, igneous rock.  These days we cut it with diamond.

Why are there 12 sides? It’s “elementary my dear Watson”: the most efficient and most conservative means to cut a stone is to remove as little material as possible, just make some flat surfaces so you can get a good seal with other rocks (there is not filler or mortar used in this wall).  This is only possible if the means by which you cut the rock is so easy, is so simple, that you do not mind putting in 1, 2, 3, 12 sides to get fit you want.  Cutting rock almost as hard as diamond like a hot knife cuts butter – what reality is needed to achieve that?

That is another discussion, and includes the Pyramids, and Florida’s Coral Castle – a very, very recent application of a similar and related technology. 

About the Author

Jeremiah Josey is Chairman of MECi Group and a systems architect specialising in energy infrastructure, advanced technology, and large-scale industrial projects. He bridges visionary thinking—from artificial intelligence and sociocratic governance to ancient symbolism and climate science—with hands-on execution across China, the Middle East, including Türkiye, the Arab states and Iran, as well as Australia. Some of his initiatives include IPRI.Tech and The Thorium Network. He helps principals and decision-makers make complex, politically sensitive projects bankable and executable. His approach combines data-driven clarity, consent-based systems design, and deep structural insight to drive rapid growth, operational excellence, and transformative impact. Learn more at MECi-Group.com