Royal Commission aerial reconnaissance in drought conditions on 19th May 2025 identified a series of cross-ditches and curvilinear ditches on the western ridge of Moel y Gelli, to the north of and above Bwlch-y-llyn farm. These may represent former field boundaries and trackways pre-dating the modern road, but there is also the possibility that they are the vestiges of a prehistoric ridge-top enclosure commanding western views here.
Recorded on frames: AP_2025_1260-63
Toby Driver, RCAHMW, May 2025