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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CountriesIE

Ireland

34 places in the atlas, 3 of them inscribed as UNESCO World Heritage.

Kinds found here

Megaliths16
Earthworks11
Archaeological wonders10
Ancient villages8
Passage tombs8
Hillforts3
Stone circles3
Contested sites2
Hypothetical places2
Megalithic cemeteries2
Monastics2
Portal tombs2

How well established

Verified30
Accepted1
Hypothetical2
Pseudo1

Top regions

County Meath, Leinster5
County Donegal, Ulster2
County Sligo, Connacht2
Atlantic Ocean west of Galway/Clare coast (~321 km west)1
Atlantic west of Ireland – Bristol phantom 1480 antecedent to Hy-Brasil1

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Verified30 Widely accepted1 Contested

Atlantic, south of Porcupine Bank phantom

Connacht / Leinster, County Roscommon / County Longford, Keenagh Bog–Corlea Bog complex, River Shannon headwaters1

Connacht/Leinster, County Roscommon–Longford, Edercloon bog1

County Clare, The Burren (Kilnaboy)1

County Cork, Munster1

County Donegal, Inishowen1

County Galway, Aran Islands (Inishmore)1

Hypothetical2

Unverified0

Pseudoarchaeology1

Heritage

UNESCO World Heritage only

Excavation

Excavated18 Partially excavated11 Not applicable3 Excavation ongoing2

1 place

Portal tombs Excavated Clear all

✓Verified

🇮🇪 Ireland · Megalith

Poulnabrone Dolmen

Early Neolithic · Early Neolithic Ireland (Lambay / Burren Neolithic)

Burren's iconic portal dolmen — 3.7 m capstone over 2.5 m chamber holding 33 Neolithic burials in limestone clint landscape.