Stone Spheres of Costa Rica

What the Show Claims

• ›Ancient Aliens claims the perfectly spherical stone balls of Costa Rica were created by aliens as territorial markers or navigation beacons. Their precise geometric form is presented as inexplicable through conventional archaeological understanding.

What Archaeology Says

The stone spheres of Costa Rica were created by the Diquís culture between 1000 BCE and 1500 CE. Archaeologists have identified quarries and manufacturing sites, demonstrating the spheres were deliberately shaped using stone tools and represent cultural/territorial markers typical of pre-Columbian societies.