The Stone Spheres of the Diquís
How did a society without metal tools or writing shape hundreds of hard igneous boulders into spheres accurate to within a few centimeters, and what did the careful arrangements of these stones mean to the people who placed them?
c. 600–1550 CE (Aguas Buenas and Chiriquí periods) · Diquís Delta, Palmar Sur, Puntarenas Province, Costa RicaAdded July 2026