The stone spheres of Costa Rica are an assortment of over three hundred petrospheres found in Costa Rica, located on the Diquís Delta and on Isla del Caño. Locally, they are also known as bolas de piedra. The spheres are commonly attributed to the extinct Diquis culture and are sometimes referred to as the Diquís Spheres. They are the best-known stone sculptures of the Isthmo-Colombian area. They are thought to have been placed in lines along the approach to the houses of chiefs, but their exact significance remains uncertain.
The Palmar Sur Archaeological Excavations are a series of excavations of a site located in the southern portion of the country, known as the Diquís Delta, and have centered on a site known as "Finca 6". The archaeological findings date back to the Aguas Buenas Period and Chiriquí Period.
World Mysteries website http://www.world-mysteries.com/sar_12.htm
Address Costa Rica
Coordinates 8°57'6.698" N -83°30'20.556" E