Castlepook Reindeer Cut Mark
Archived: 8 September 2026
Abstract
About 31,984 BCE, Ireland lay within the Late Pleistocene, as cold, open steppe-tundra environments developed before the Last Glacial Maximum. Ice expansion was uneven, and access from Britain or Europe remains uncertain despite lower sea levels. Castlepook Cave, County Cork, preserves a diverse Marine Isotope Stage 3 fauna, including reindeer, mammoth, giant deer, hyena and Arctic species. A reindeer femur, dated roughly 33,000 years ago, bears a possible stone-tool butchery mark and may represent Ireland’s earliest human trace. However, its disturbed cave context, lacking tools or camps, cannot prove settlement. Advancing ice erased evidence, leaving only a tentative Palaeolithic visitation.