It is easy to miss, and for most of human history it was missed entirely, until a limited excavation in 2000 brought it briefly to light.

The deposit, which measures roughly fourteen to fifteen metres north to south and seven to eight metres east to west, is tentatively identified as the remains of a fulacht fiadh, a type of prehistoric cooking site found in large numbers across Ireland. The typical fulacht fiadh consists of a trough, usually timber-lined or stone-lined, filled with water and heated by dropping fire-cracked stones into it; the discarded burnt stones accumulate over time into a characteristic horseshoe-shaped mound. The Kilmore site fits the pattern well. Its position in the wettest part of the field is no accident; access to water was essential, and these sites are almost always found in low-lying, boggy ground near streams or springs. The excavation, reported by Hodkinson in 2002, also noted a nearby enclosure, suggesting the site did not exist in isolation but formed part of a broader pattern of activity in the landscape, though the relationship between the two features remains unclear.