A 5 m wide, 12 m long earth and stone bank which runs north to south at a right angle to the Afon Dyffryn. The bank runs to a pinch point in the river with a slight earth mound seen on the opposite bank. The bank is interpreted as a causeway approaching a bridge, now extant. Methodology: 30 m transect survey. Positional accuracy: less than 10 m. Tolerance of accuracy: +/- 5m. K. Laws, EAS Ltd, 26/11/2007.
