Castell Carndochan, near Llanuwchllyn, is a little-known stone castle of the Welsh princes, thought to date to the time of Llywelyn ap Iorwerth or Llywelyn ap Gruffudd. As part of a Cadw-funded project, Gwynedd Archaeological Trust carried out survey, clearance and stabilisation works to address areas of erosion and assess the survival of masonry beneath the rubble. Excavation revealed a D-shaped tower, a rectangular structure, and parts of the curtain wall and keep, demonstrating that significant remains survive despite centuries of collapse. The project highlights the castle’s importance as a high-status medieval site and provides essential information for its conservation and future management
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