Archaeologists have uncovered over 300 fascinating stone spheres, known as retrospheres, believed to have been created between 600 and 1500 AD.
These spherical objects, found in southern Costa Rica’s Diquís Delta, remain shrouded in mystery, with theories suggesting they could symbolize celestial bodies like the sun and moon.
Ranging from a few centimeters to over 2 meters in diameter and weighing up to 15 tons, the spheres were meticulously crafted from materials like gabbro, limestone, and sandstone.
The stones appear to have been shaped using hammering and polishing techniques, with some unfinished pieces still located in the hills.
The site of Palmar Sur, where many of these retrospheres were found, holds cultural significance, providing insights into the region’s pre-Columbian history.
Some speculate that the spheres served decorative purposes, while others argue they may have had ceremonial or astronomical roles. Their precision and varying degrees of finishing suggest the involvement of skilled artisans who carefully transported the stones from distant locations.
