10 - Prehistoric Monuments
Perthi Duon Burial Chamber - Brynsiencyn
Remains of a chambered tomb, dating to the Neolithic period (c.4,400 BC - 2,900 BC).
A capstone 2.5 m long and 1.8 m wide is lying on two fallen stones .
It would have been covered by a cairn or a mound.
Recent (2014) discoveries show this monument to be a portal dolmen (cromlech)
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Directions : - from the Car Park in Brynsiencyn , head west along the A4080 to a lane - Lon Uchaf ,
a FP off the lane passes the monument in a field.
Ref: NW 1733
Date: 13/02/2023
Location: SH 4798 6675
