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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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Tagsirish-sea-neolithic

#irish sea neolithic

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

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Verified1 Widely accepted0 Contested0 Hypothetical0 Unverified0 Pseudoarchaeology0

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Megaliths1 Portal dolmens1

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🇬🇧United Kingdom1

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1 place

🇬🇧 United Kingdom · Megalith

Carreg Samson Dolmen — Trevine

Neolithic (3200 BCE) · Irish Sea Neolithic

Carreg Samson Dolmen — Trevine in Pembrokeshire, Wales, United Kingdom is a Neolithic (3200 BCE) megalithic attributed to Irish Sea Neolithic.