Pre-Historic Mega Structure Discovered in Montana
This imposing megalithic wonder is composed of massive polygonal granite stone blocks intricately stacked and aligned in a perfectly straight line.
Pre-Historic Mega Structures of Ollantaytambo Predating the Inca
Ollantaytambo is a gigantic complex located in the Sacred Valley of the Incas and possesses one of the most precise megalithic polygonal masonry in the world.
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