An atlas of Earth’s mysterious places — megaliths, pyramids, lost and sunken cities — with the evidence shown plainly: what is verified, what is contested, and what is still unknown.

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Megaliths in Costa Rica matching “Puntarenas, Osa” · Mysteria

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Megaliths in Costa Rica matching “Puntarenas, Osa”

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🇨🇷 Costa Rica · Megalith

Diquís Stone Spheres

Chiriquí period (~600–1500 CE; peak Aguas Buenas 800–1350 CE) · Diquís (Chiriquí, Isthmo-Colombian)

Costa Rica's Diquís Delta preserves over 300 near-perfect spheres of gabbro up to 2.66 m diameter and 16 tonnes, shaped by pecking and grinding until calipers verify sphericity within 2 cm.