Fragments of burnt stone and charcoal surface along a stretch of roughly twelve metres beside a field drain, the kind of detail easily mistaken for agricultural debris. But this is part of a much older pattern, one that repeats itself across the same valley for approximately one and a half kilometres.

What lies here belongs to a class of prehistoric site known in Irish as fulachtaí fiadh, the singular being fulacht fiadh. These are ancient cooking sites, typically dated to the Bronze Age, where water was heated by dropping fire-cracked stones into a trough. The stones, once spent, were discarded into a mound nearby, and it is these accumulations of shattered, heat-stressed rock and charcoal that archaeologists recognise as the signature of the site. At Lisnarawer, this particular burnt mound sits towards the north-north-east end of a valley that appears to have been favoured repeatedly for exactly this purpose. Some of the mound material has spread into a low, sod-covered bank of upcast earth that borders the field drain running along the valley floor, suggesting the drain itself may have disturbed or redistributed material over time. The concentration of multiple fulachtaí fiadh within such a confined stretch of landscape is notable, pointing to a location that was returned to again and again, perhaps because of reliable access to water or simply the sheltered geography of the valley.