Castell Bryn Gwyn ancient settlement on
Anglesey.
Castell Bryn Gwyn SH 464671.
Located just outside Brynsiencyn. Believed to be an ancient
religious sanctuary dating from 4500BC. I would guess the diameter
of the circle to be a couple of hundred feet (ish). When I visit
these sites I often wish that the Gwynedd Archaeological Society
would have the funding to uncover this type of site so we
may have a better look and therefore understanding of what they
might have looked like.

Castell Bryn Gwyn outer wall
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Castell Bryn Gwyn outer wall
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Castell Bryn Gwyn CADW Sign
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