It measures fifteen metres north to south, ten metres east to west, and rises only twenty centimetres above the surrounding terrain. That near-invisible profile is the point: this is a fulacht fia, one of the most common yet persistently mysterious monument types in the Irish archaeological landscape. A fulacht fia is generally understood to be a Bronze Age cooking site, where water held in a trough was brought to the boil by dropping fire-heated stones into it. Over time, those cracked and spent stones were piled to the side, forming the characteristic horseshoe or kidney-shaped mound of dark, burnt material that survives here in flattened form.

The site at Spital was not found by deliberate excavation but came to light during land reclamation, the kind of agricultural improvement work that has incidentally revealed countless buried features across Ireland. By the time it was recorded, the mound had been almost entirely levelled, leaving only that shallow spread of scorched stone and charcoal-rich earth to mark the spot. What makes the location particularly interesting is that it does not sit alone: a second fulacht fia lies approximately 110 metres to the south-south-east. Paired or clustered fulachta fia are not unheard of, and their proximity here, both placed in marginal, water-adjacent ground, suggests the area may have seen repeated or sustained activity during the Bronze Age, when reliable access to water was a practical necessity for the process.