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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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© 2026 Mysteria. Exploring the ancient world.Map © OpenFreeMap · OpenMapTiles · OpenStreetMap contributors

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Tagsdimmidi

#dimmidi

1 place carries this tag, across every kind and continent it appears in.

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Verification

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Verified1 Widely accepted0 Contested0 Hypothetical0 Unverified0 Pseudoarchaeology0

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Ancient cities1 Fortresses1

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🇩🇿Algeria1

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Partially excavated1

1 place

✓Verified

🇩🇿 Algeria · Fortress

Castellum Dimmidi (El Hadjira Outpost)

Roman (198–260 CE) · Roman (Numidia, Severan frontier)

Southernmost Roman desert burgus near El Hadjira with Palmyrene ostraca.