🇬🇧 United Kingdom · Megalith
Coetan Arthur at St Davids Head
Early Neolithic (c.3800–3600 BCE) · Western Neolithic (Pembrokeshire)
Headland portal dolmen (capstone 5 x 3 m) on St Davids Head cliff overlooking Whitesands Bay — Neolithic coastal tomb.
🇬🇧 United Kingdom · Megalith
Bodowyr Burial Chamber
Early Neolithic (c.3800–3200 BCE) · Neolithic Anglesey (Irish Sea province)
Anglesey portal dolmen with wedge capstone on five stones — small Neolithic tomb in farmland south of Gaerwen.
🇵🇹 Portugal · Megalith
Alentejo — Almendres Cromlech Western Europe's Largest Stone Circle
Neolithic (6000–3000 BCE earliest Almendres 6000 alley; cromlech 5000 BCE) · Alentejo Neolithic Almendres (Cardial) and later
Almendres Gromlech Sofia's largest Iberian, 6000 BCE.
🇵🇹 Portugal · Megalith
Cromlech of Xarez — Alqueva Flood Rescue Circle Olhoslake
Neolithic (4000 BCE) rescue before Alqueva 2004 · Alentejo Xarez phase
Xarez 51 square relocated before Alqueva flood 2004.