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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Places in Portugal matching “Algarve, Faro, Portimão, Mexilhoeira Grande, Penina–Alcalar ridge” · Mysteria

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Places in Portugal matching “Algarve, Faro, Portimão, Mexilhoeira Grande, Penina–Alcalar ridge”

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Verified16 Widely accepted0 Contested2 Hypothetical3 Unverified0 Pseudoarchaeology3

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“Algarve, Faro, Portimão, Mexilhoeira Grande, Penina–Alcalar ridge”🇵🇹 Portugal Clear all

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🇵🇹 Portugal · Megalith

Alcalar Megalithic Necropolis — Portimão

Chalcolithic (c.3000–2500 BCE) · Algarve Chalcolithic (Los Millares–Vila Nova de São Pedro group)

Alcalar (Chalcolithic 3000–2500 BCE) is a fortified hilltop settlement and 18-mound necropolis crowning the Alcalar ridge between Portimão and Lagos, Algarve, with the massive Monument 7 tholos: a…