Burnt mounds, known in Irish as fulacht fiadh, are essentially the debris of repeated prehistoric cooking or industrial activity, accumulations of fire-cracked stone, charcoal, and scorched soil left behind after water was heated by plunging hot rocks into a trough or pit. They survive in their hundreds across Ireland, typically in low-lying or waterlogged ground, and the one at Mauteoge is a quietly typical example of the type.

What survives here is a layer roughly six to eight metres long and between thirty and forty centimetres deep, exposed in the east-facing cut of a north-south field drain. The material is dark soil mixed with heat-shattered sandstone fragments and flecks of charcoal, the characteristic signature of sustained, repeated burning. A small portion of the mound is also visible in the field boundary running along the eastern edge of the drain, though the southern end of the deposit has been cut through by a modern farm track crossing the drain. Perhaps the most striking detail is the proximity of a second burnt mound, located just fifteen metres to the south-west. Two such sites so close together suggest this patch of ground saw repeated use, possibly across generations, by people who returned to the same damp, water-accessible spot to carry out whatever work these monuments represent.