Modern drainage ditch passing E-W beneath lane running from Bwlch y Groes towards Llanwchllyn. It is 0.6m wide, 0.4m deep and flat bottomed. The ditch runs down a steep slope towards W, under a fence and then curves round to N, getting larger.
Recorded as part of RCAHMW Uplands Initiative Project, W. B. Horton, H&H, 18/06/2012.