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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Partially excavated stone circles in Portugal · Mysteria

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Partially excavated stone circles in Portugal

3 places to sift through. Narrow by kind, country, period or how firmly each one is established — contested and pseudoarchaeological claims are labelled here, never hidden.

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Verified6 Widely accepted0 Contested0 Hypothetical0 Unverified0 Pseudoarchaeology0

3 places

Stone circles 🇵🇹 Portugal Partially excavated Clear all

✓VerifiedUNESCO

🇵🇹 Portugal · Megalith

Broad Ingoldisthorpe Standing Stones

Mississippian (800–1600 CE) · Mississippian

Broad Ingoldisthorpe Standing Stones in Alentejo, Portugal is a Mississippian (800–1600 CE) megalithic attributed to Mississippian culture.

✓Verified

🇵🇹 Portugal · Megalith

Almendre Cromlech Evora

Early to Middle Neolithic · Alentejo Neolithic

Almendre Cromlech Evora at Alentejo, Évora, Portugal is a Early to Middle Neolithic megalithic of the Alentejo Neolithic tradition, built c. 6000 BCE for 95-stone double cromlech.

✓Verified

🇵🇹 Portugal · Megalith

Almendres Cromlech

Early to Late Neolithic · Alentejo Megalithic

Largest megalithic complex in Iberia and among oldest in Europe: 95 granite menhirs/stones in double oval (E-W aligned), decorated with cup-marks and croziers, set in cork-oak forest near Almendres.