This is a fulacht fia, a type of site found in enormous numbers across the Irish landscape, typically beside a water source. The general interpretation is that these were outdoor cooking places: a trough dug into the ground was filled with water, and stones were heated in a fire before being dropped into the trough to bring the water to a boil. The cracked, fire-shattered stones were then discarded to the side, accumulating over repeated use into the characteristic horseshoe-shaped mound that survives today.

This particular example, at Glencolumbkille in Clare, measures roughly ten metres along its longer axis and rises between 0.7 and 1.2 metres at its highest points. The elongated horseshoe shape is clearly defined despite the vegetation that has colonised it. What makes the spot quietly remarkable is the density of related archaeology in a very small area. Two further fulachta fia sit within fourteen metres of this one, the nearest barely two metres to the east, suggesting the location was returned to repeatedly, or that several such features were in use at the same time. A holy well lies around fifty-three metres to the north, and the streams that run to the south and northeast of the site would have provided the water supply that made repeated use of this kind of cooking place practical in the first place. The clustering of three fulachta fia alongside a holy well and natural watercourses points to a patch of ground that held some significance, functional or otherwise, over a long period.