Glacial Ireland
Archived: 8 September 2026
Around 31,993 BCE, Ireland was a cold, unstable landscape during the later Last Glacial Period, not a documented human society. Calendar-year precision is impossible: radiocarbon and geological evidence provide only broad, uncertain ranges. Fermanagh deposits indicate open tundra, severe seasons and sparse vegetation, while changing ice and lower seas altered terrain and coastlines. Castlepook Cave preserves diverse Late Pleistocene fauna, including mammoth, giant deer, reindeer, predators and smaller mammals, demonstrating connections with north-west Europe, though not their presence in one year. No securely dated Irish settlement, tools or burials exist from this period. Later glaciation reshaped landscapes and obscured evidence.