A 500m linear earthwork, 12m wide and up to 0.8m high. Thought to be a segment of the Roman road running between Llandovery and Llanfair Clydogau via Pumsaint (NPRN 303528).

Details from CADW scheduling description.

The feature continues as a cropmark to the west (NPRN 309587).

John Wiles 20.12.2006