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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Fortresses tagged “shell midden”

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🇨🇱 Chile · Rock art

Punta Lobos

Archaic to Late Intermediate 5000 BCE–1500 CE · Chango-Chinchorro maritime

Coastal Changos maritime promise rock art and 4 m shell mounds on Atacama sea cliff, 5000 BCE–1500 CE.