It is not a monument in any conventional sense, no walls, no obvious mound, just a dark smear in the section of a coastal bank, roughly 500 metres west of Reenaloughan Point. That sliver of scorched material is, however, the probable remnant of a fulacht fiadh, one of the most common yet still somewhat mysterious prehistoric site types found across Ireland.

A fulacht fiadh, sometimes called a burnt mound, is thought to represent a Bronze Age cooking or heating method. The typical process involved heating stones in a fire and then dropping them into a water-filled trough to boil the contents, though some researchers have proposed other uses including textile production or bathing. The shattered, fire-cracked stones that result accumulate into a distinctive spread or horseshoe-shaped mound. At this particular site on Valentia, a charcoal sample taken from the feature produced a radiocarbon date of 2970 plus or minus 90 years before present, placing the activity broadly in the late Bronze Age, somewhere around the early first millennium BC. The identification and dating were carried out by Mitchell, published in 1989.