Dry stone wall enclosing a small paddock to the west of Dyffryn Mymbyr House, replaced by a modern fence. The wall was constructed of flat slabs but is now very tumbled and spread over an area approximately 2 m wide. The enclosure is 30 m by 40 m approximately in size. Evident on AD 1890-91 Ordnance Survey map. K. Laws, Engineering Archaeology Services, 6th February 2005.