Approximately 0.9km NE-SW, extending to Nant Canwyllyr at NE end. Mainly drystone wall 0.3-1m high, 0.4m wide, but partly survives as a bank 2m wide and 0.7m high. At SW end it forms a bank curving down hill NW-SE as a bank, with stone wall visible in places, 1-1.5m wide and 0.7-1.5m high. The bank terminates at the A4061, which probably truncated it.
Recorded as part of Uplands Initiative Survey. R Hayman, H&H, 10/09/2009.