The discovery came during routine fieldwork ahead of the wind farm development, when the survey team noticed a series of relict field boundaries crossing the proposed access road on the southern flank of the hill. These stone walls, deeply embedded in the subsoil and in extremely poor repair, hadn’t appeared on any Ordnance Survey maps and likely date to prehistoric times.

Further investigation using Electronic Distance Measurement (EDM) equipment revealed two distinct field systems on the hill. The western flank featured a substantial circular enclosure approximately 170 metres in diameter, defined by the remains of a stone wall that curved from north-west through north to east, with portions preserved as a waterlogged ditch. This enclosure appeared to be bisected by a cross-wall running north-north-west to south-south-east, and included a small subrectangular structure measuring about 6 by 5 metres. About 100 metres south-east of the main enclosure, the team also recorded what may have been a hut circle; a level platform backed by rock outcrop with a curving bank that created an oval area roughly 25 by 20 metres.

The eastern section of the field system consisted of several walls built from large boulders, running perpendicular to the hillside’s slope. These walls, traceable for distances of up to 130 metres, typically terminated at natural rock outcrops on their uphill ends whilst petering out downslope. Bog probing confirmed that the walls ended roughly where they were visible on the surface, with no significant extensions hidden beneath the peat. Interestingly, the fourth wall marked a distinct change in vegetation on the hillside; to its west lay grass, reeds and exposed bedrock weathered by the prevailing south-westerlies, whilst to the east, the sheltered leeward side was blanketed in peat, heather and sphagnum moss that effectively concealed any further archaeological remains.