At Curraghataggart in County Waterford, a low kidney-shaped mound sits quietly on the eastern bank of a stream, tucked into the bottom of a south-to-north valley. Grass-covered and stony, it measures roughly eleven metres by six, rising no more than seventy centimetres at its highest point. It is easy to walk past without a second glance, which is part of what makes it so quietly remarkable: this modest hump in the ground is almost certainly a fulacht fia, one of the most numerous yet least understood monument types in the Irish landscape.

Fulachtaí fia, found in their thousands across Ireland, are the remnants of ancient burnt mound sites, typically Bronze Age in date. The standard interpretation is that they were cooking places: stones were heated in a fire, then dropped into a water-filled trough, bringing the water rapidly to the boil. Over time, the repeatedly cracked and shattered stones were raked out and piled to the side, forming the characteristic horseshoe or kidney-shaped mound that survives today. The open southern face of the Curraghataggart example is consistent with this form, and the site's position beside a reliable stream would have been essential, since a ready water supply was the whole point of the location. Some researchers have proposed alternative uses for such sites, including textile processing or bathing, though cooking remains the dominant theory. Whatever their precise function, they represent repeated, organised activity at a fixed spot, probably across many generations.