Researchers and adventurers alike are drawn to the area, hoping to uncover more about the ancient stone spheres and their origins. So, what exactly are the Valley of Balls’ strange formations?

Related: Rare Artifacts from the Ancient Egyptian Era In Costa Rica, stone spheres are located on the Diquis Delta and on Isla del Cano, and are one of the most interesting ancient artifacts.

recently returned from a trip to Costa Rica where he and colleagues evaluated ancient stone spheres for UNESCO, the United Nations cultural organization that might grant the spheres World Heritage ...