Castell Bryn Gwyn, Neolithic site in Llanidan, Wales.
The circular earthwork enclosure features a massive rampart rising 2.6 meters high and encompasses an internal area spanning 54 meters in diameter.
The site originated as a Neolithic ritual henge around 2500 BC and later transformed into a defensive settlement during the Iron Age period.
Archaeological excavations at Castell Bryn Gwyn reveal patterns of continuous human occupation from Neolithic times through the Roman period in first century AD.
The monument includes a designated parking area near the A4080 road, with a footpath leading visitors directly to the archaeological remains.
The structure maintains a precise astronomical alignment with the Bryn Gwyn stones, where the midsummer sun rises directly above the ancient enclosure.
Location: Anglesey
Location: Llanidan
Website: https://cadw.gov.wales/visit/places-to-visit/castell-bryn-gwyn
GPS coordinates: 53.17830,-4.29793
Latest update: March 6, 2025 02:25
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