Muskeg Beneath Two Tills
Archived: 22 September 2026
Around 30,900 BCE, Ireland’s past is reconstructed from environmental evidence rather than records or communities. At Derryvree, County Fermanagh, organic wetland deposits between two glacial tills indicate a cold, treeless, tundra-like landscape of pools, mosses, sedges and Arctic-alpine plants during an interstadial interval. Ice margins, drainage and coastlines remained unstable, and conditions varied regionally. Cave remains, notably from Castlepook, County Cork, show diverse MIS 3 fauna, including mammoth, reindeer, giant deer and hyaena, though not necessarily contemporaneously. A cut-marked reindeer bone may suggest brief human activity, but cannot demonstrate settlement or continuous occupation. Dating permits only broad chronological ranges securely.