🇬🇧 United Kingdom · Megalith
Lligwy Burial Chamber
Early–Middle Neolithic (c.4000–3500 BCE) · Neolithic Anglesey (passage grave tradition)
Eastern Anglesey portal dolmen with colossal 25-tonne capstone (6.5 x 5.5 m) — one of Wales's heaviest.
🇵🇹 Portugal · Megalith
Cromlech dos Almendres — Western Enclosure
Early to Late Neolithic · Alentejo Megalithic
Western arc of Almendres Cromlech (c. 6000–3000 BCE), the largest stone circle in Iberia with 95 granite menhirs in elliptical setting.
🇵🇹 Portugal · Megalith
Almendres Menhir Pair — Vale Maria do Meio Cromlech Satellite
Neolithic (5200–4200 BCE) Almendres satellite · Alentejo Neolithic satellite 5200-4200
Vale Maria do Meio excavated by Pina 1960s, U cromlech.
🇬🇬 United Kingdom · Megalith
Le Déhus Dolmen
Middle Neolithic (c.3500–3000 BCE) · Channel Island Neolithic (Norman-Breton passage grave)
Guernsey's finest passage grave (10.5 m passage) with 'Guardian' anthropomorphic carving on capstone — unique Channel Island art.
🇬🇧 United Kingdom · Megalith
Carreg Samson Dolmen
Early Neolithic (c.3800–3600 BCE) · Western Neolithic (Pembrokeshire)
Cliff-top portal dolmen near Abercastle harbour — massive capstone (4.7 m) on three orthostats with sea backdrop.
🇪🇸 Spain · Megalith
Pedra da Arca — Pino do Val Cromlech Group 7 Dolmens with Mastiff
Neolithic (4000–3000 BCE group 7 dolmens in 1 km) · Galician Neolithic cluster Pedra da Arca 7 tombs
Pedra da Arca 7 dolmens cluster.
🇵🇹 Portugal · Megalith
Cromlech da Portela de Mogos — Almendres Circle Variant Sagging
Neolithic (5000–3500 BCE) Almendres series · Alentejo Neolithic Portela phase
Portela 40 ellipse with face noses.