Why Are Scientists Puzzled By These Stone Spheres

The Stone Spheres of Costa Rica are a collection of over 300 perfectly spherical stone balls, ranging in size from a few centimeters to over two meters in diameter, that were discovered in the jungles of Costa Rica in the 1930s. The purpose and origin of the spheres remains a mystery, as they were likely created by indigenous peoples in the region thousands of years ago. Let's talk about this mystery and possible explanations. + You can mention other similar mysteries of Costa Rica (Las Bolas artifact, Boruca Dragon, etc)