In 2004, archaeological testing carried out ahead of road construction at Tinnynarr in County Longford uncovered a burnt mound measuring 9.4 by 7.9 metres, sitting quietly in the landscape just outside the planned road-take. Because it fell beyond the zone of disturbance, it was preserved in situ rather than excavated fully, which means it remains largely undisturbed beneath the surface today.

Burnt mounds are among the most common prehistoric monuments in Ireland, yet they remain genuinely puzzling. They typically consist of a mound of heat-shattered, fire-cracked stone, often associated with a hearth and a trough or pit, and are generally dated to the Bronze Age. The working theory is that stones were heated in a fire and then dropped into a water-filled trough to bring it to the boil, though whether this was for cooking, bathing, textile processing, or something else entirely is still debated. What makes Tinnynarr of particular interest is its proximity to a second related site. A possible fulacht fia, the Irish term often used interchangeably with burnt mound though sometimes implying a slightly different type of cooking place, lies roughly 130 metres to the north-north-west. The clustering of such features in a small area hints at sustained prehistoric activity in this part of the Longford landscape, though the relationship between the two sites remains unresolved.