Where the northern edge has been disturbed, charcoal-blackened soil and fire-shattered stone push through, the mound itself rising only 0.52 metres at its highest point and measuring roughly 9.5 metres north to south by 8.2 metres east to west. It is easy to walk past without a second glance.

This is a fulacht fia, a type of site found in considerable numbers across Ireland and dating broadly to the Bronze Age, though some examples are earlier or later. The term refers to a burnt mound, typically the accumulated debris from a cooking method that involved heating stones in a fire and dropping them into a water-filled trough to bring the water to boiling point. Over time, the cracked and spent stones pile up into the horseshoe or kidney-shaped mound that survives. At this particular site in Tylagh, no trough is currently visible at the surface, which is not unusual; such features are often buried or have simply not survived in a recognisable form. The site was documented as part of Michael Connolly's research into the prehistoric settlement of the Lee Valley near Tralee, published as a doctoral thesis through University College Cork in 2008. The field around it has been partially cleared, and that clearance is what caused the damage to the mound's northern side, inadvertently exposing the burnt material within.