These Ancient Stone Spheres in Costa Rica Are One of ...
Stone spheres of Costa Rica. Reventazon river view. Photo: Rodtico21. In the 1930s, the United Fruit Company was clearing land in the Diquís Valley of Costa Rica, when workers began unearthing large numbers of almost perfectly round stone spheres. The largest of these undoubtedly manmade balls is over two meters ( ft) in diameter and weighs over 16 tons. No one actually knows why they ...