Maen Llwyd standing stone is an erect monolith 3.1m high. It is roughly square in section, about 1.0-1.3m across, and rises to a point from a shoulder about mid way up.

In 1875 a small excavation at the foot of the stone recovered fragments of a later Bronze Age cinerary urn togrther with burnt bone and charcoal. Trenching in 1931 failed to locate any further features. From the early nineteenth century the stone was enclosed in Glynllifon Park (NPRN 86377), standing by the drive just within the south-western gate and lodge (NPRN 406382).

Sources: Wynn Williams in Archaeologia Cambrensis 4th series VI (1875), 381-2
Hemp in Archaeologia Cambrensis 87 (1932), 199-201
RCAHMW Caernarvonshire Inventory II (1960), 198 No. 1237

John Wiles 29.06.07