It measures roughly nine metres north to south and fourteen metres east to west, and to the untrained eye it reads simply as a slight rise in the ground. Beneath and within that rise, however, is a spread of burnt material, the characteristic signature of a fulacht fia.

Fulachtaí fiadh are among the most numerous prehistoric monuments in Ireland, found in their thousands across the country and almost always near water. The term is sometimes translated loosely as "cooking place of the deer," though their precise function has been debated at length by archaeologists. The conventional interpretation holds that they were used for boiling water, most likely for cooking meat: stones would be heated in a fire, then dropped into a timber or stone trough filled with water, bringing it rapidly to a boil. The characteristic mound that remains is the accumulated debris of those shattered, heat-cracked stones, discarded over repeated use. What makes the Ballyclogh site particularly worth noting is that it does not stand alone. It belongs to a cluster of ten such monuments recorded in the same area, a concentration that points to sustained or repeated prehistoric activity along this stretch of the stream. Lehane noted the site in 1988 as a mound of burnt material, and the description has remained consistent since.