Mosses Under the Derryvree Drumlin
Archived: 18 September 2026
31,330 BCE is a notional date within the climatically unstable Late Pleistocene, not a recoverable Irish historical year. At Derryvree, County Fermanagh, freshwater silts beneath glacial till, broadly dated to 36,900–31,700 cal BP, preserve evidence of mosses, sedges, insects and open periglacial wetlands. Ireland experienced uneven glacial build-up, with ice, exposed terrain and changing coastlines varying regionally. Castlepook Cave, County Cork, contains mixed Late Pleistocene remains of mammoth, reindeer, giant deer, hyena and other fauna, demonstrating episodically viable cold-country habitats. A possibly cut-marked reindeer femur may indicate brief human activity, but cannot prove settlement. None proves agriculture or permanent population.