It is a fulacht fia, one of thousands of Bronze Age cooking sites scattered across Ireland, and its form is immediately recognisable to anyone who knows what to look for: a horseshoe-shaped mound curving around what would once have been a water-filled trough. The mound here measures roughly twelve metres on its longer axis and just over ten on the shorter, rising to about sixty centimetres at its highest point, with the open end of the horseshoe, some three and a half metres wide, facing west.

Fulachtaí fia (the plural form) are among the most common archaeological monuments in Ireland, yet they remain genuinely puzzling. The working theory is that stones were heated in a fire and then dropped into a trough of water to bring it rapidly to the boil, the scorched and shattered stones then raked aside into the distinctive mounds that survive today. What was being cooked, or whether cooking was even the primary purpose, is still debated. Some researchers have proposed uses ranging from textile processing to brewing. The boggy ground in which this example sits is typical; wetland settings provided a reliable water source and the soft ground made it easier to cut or line a trough. The burnt mound at Knockyrourke would date broadly to the Bronze Age, a period spanning roughly 2500 to 500 BC in Irish terms, though individual sites are difficult to date without excavation.