Unremarkable at a glance, it is in fact a fulacht fia, a type of prehistoric cooking site found in enormous numbers across Ireland, typically identified by their characteristic horseshoe or kidney-shaped mounds of fire-cracked stone and charcoal. This one, though, is not alone.

What makes the site at Aglish quietly compelling is the density of what survives in a single field. Three other fulachta fiadh lie within the same boundary, positioned to the south, east, and north-east of this mound. The standard interpretation of these monuments holds that they functioned as outdoor cooking places, probably during the Bronze Age, where stones were heated in fire and then dropped into a water-filled trough to bring it to the boil. The waste material, burnt and shattered stone, accumulated over repeated use into the low mounds still visible today. Finding four of them clustered together in one waterlogged field raises questions about how intensively this patch of ground was used, and by whom, over what period of time. Marshy terrain was no accident; a reliable source of water was essential to the whole process, and low-lying ground provided exactly that.