Threeleaf Pools at Maguiresbridge
Archived: 6 October 2026
At 30,183 BCE, Ireland has no recoverable annual history or confirmed human settlement. Derryvree, near Maguiresbridge, provides evidence from freshwater sediments between glacial tills, dated broadly to 36,900–31,700 calibrated years BP. These reveal a locally ice-free, treeless wetland of pools, sedges, mosses, grasses and cold-adapted plants, subject to severe seasonal conditions before renewed glaciation. Ice extent elsewhere remained variable and uncertain. Castlepook Cave’s mixed fauna demonstrates intermittent availability to mammoth, reindeer and predators, while a possibly cut-marked reindeer bone suggests unproven brief human activity. No evidence supports resident communities, political life or reconstructed society; ecological remains form the principal archive.