Llandyfaelog,
Carmarthenshire

National grid reference: SN 386123

Described as Maen Llwyd 'The Grey stone' as are most of the other standing stones in the vicinity on either side of the Towy Estuary. This 2.2 metre high square maenhir stands in a large sloping field in front of Iscoed Mansion, associated with Lt. Gen. Sir Thomas Picton.