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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Hilltops tagged “enclosure”

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🇺🇸 United States · Earthwork

Fort Hill

Middle Woodland (Hopewell) · Hopewell (Ohio Hilltop)

Hopewell hilltop enclosure (100 BCE–400 CE) on Baker Fork gorge — 2.4-km wall with 33 gates.