Bryn Gwyn stones

The Bryn Gwyn Stones are two tall standing stones on a low ridge above the Afon Braint valley on Anglesey. They sit near the remains of Castell Bryn Gwyn and form part of a Neolithic site. The taller stone reaches nearly four metres, making it the tallest standing stone in Wales. In 1723 Henry Rowlands recorded eight stones in a circle about sixteen metres wide. By 1797 only scattered remains were left after local people disturbed the site. Archaeologists found three pits in 2008, two still holding stone stumps, matching Rowlands’ description. Excavations in 2010 revealed three more pits, bringing the total to seven of the expected eight stones. One pit held a blade-style stone aligned with the summer solstice sunrise and winter solstice sunset. A public footpath passes the stones, running from the A4080 road past Castell Bryn Gwyn and on to Caer Lêb. Visitors follow the footpath to see the two standing stones standing in a modern field bank. The site offers views across the valley and towards Castell Bryn Gwyn. The midsummer sun rises over the centre of the old castle from this spot. Nearby, traces of an 18th-century cottage built against one stone show notches where roof timbers once fitted. The stones once served as a gateway after the cottage was removed.