
https://youtu.be/ZeHSU_-LgiU
Published on Dec 22, 2016
The spheres of Costa Rica are proof of incredible masonry skills. A study performed by the University of Pennsylvania shows that the spheres are 96% perfect. They range in size between 0.5 and 2.50 meters in diameter and are intricately placed in specific geographic locations. Most importantly, the ancient inhabitants of Costa Rica claim the spheres were not crafted by them.
Source: http://www.ancient-code.com/
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