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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Caves tagged “washington”

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🇺🇸 United States · Cave

Marmes Rockshelter

Paleo-Indian to Protohistoric (10,000 BCE – 1800 CE) · Columbia Plateau Paleo-Indian to Cayuse

Marmes Rockshelter in Washington, United States is a Paleo-Indian to Protohistoric (10,000 BCE – 1800 CE) cave attributed to Columbia Plateau Paleo-Indian to Cayuse culture.