When a V-shaped drainage channel, roughly 2.4 metres wide and 0.6 metres deep, was cut through the hillside at Lehid, it sliced through two separate layers of burnt material lying just 0.2 metres beneath the bog's surface. The layers appear on opposing faces of the cut, one on the north-east side measuring 1.6 metres long and 0.4 metres deep, the other on the south-west side at 1.4 metres long and the same depth. Whatever burning took place here, it happened before the bog grew over it and preserved it.

Burnt spreads of this kind are a known but understudied feature of the Irish archaeological landscape. They may represent fulachta fiadh, the broad term used for ancient burnt mounds, typically the debris of outdoor cooking sites where water was heated by dropping fire-cracked stones into a trough, leaving behind a distinctive spread of blackened, shattered material. The bog has acted here as an accidental archive, sealing the evidence at Lehid until drainage work brought it back into view. About 40 metres to the north of the site lies a separate recorded enclosure, which raises the possibility that the burning was not an isolated act but part of a wider pattern of activity on this stretch of hillside, though the relationship between the two features remains unclear.