Ice Age Threshold
Archived: 8 September 2026
Around 31,997 BCE, Ireland’s history cannot be reconstructed as a dated event, because no written or securely associated archaeological evidence survives. The period, roughly 34,000 years ago, preceded the Last Glacial Maximum and featured changing, regionally variable environments. Castlepook Cave in County Cork preserves remains of reindeer, mammoth, giant deer, bears, wolves and hyenas, indicating productive open habitats. A reported cut mark on a reindeer femur may represent Upper Palaeolithic butchery, but cannot demonstrate permanent settlement or continuous occupation. No tools, hearths, human remains, political structures or cultural traditions are securely known. Ireland’s possible human presence remains tentative and episodic.