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🇬🇧 United Kingdom · Ancient village
Late Iron Age – Romano-British (c.100 BCE–500 CE) · Romano-British / Late Iron Age Welsh
Polygonal-walled Romano-British hut-circle village (~500 CE) with two roundhouses on limestone ridge above Lligwy Bay.
🇬🇧 United Kingdom · Megalith
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.
🇬🇧 United Kingdom · Megalith
Early Neolithic (c.3800–3600 BCE) · Neolithic Anglesey
Twin Neolithic chamber tombs in single long cairn near Presaddfed — west chamber with 5 m capstone best preserved.
🇬🇧 United Kingdom · Megalith
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.
🇬🇧 United Kingdom · Megalith
Late Neolithic · Irish Sea passage grave tradition
Anglesey cruciform passage grave with spiral-decorated stones and 27 m cairn on coastal headland.
🇬🇧 United Kingdom · Megalith
Late Neolithic to Early Bronze Age · Irish Sea Passage Tomb tradition
Anglesey passage tomb with 8.4 m passage aligned to midsummer sunrise and decorated spiral stone.
