Cork’s Pleistocene Crossroads
Archived: 14 September 2026
Around 31,715 BCE, Ireland lay in the unstable Late Pleistocene before the Last Glacial Maximum, when climate, ice extent and coastlines changed. Evidence comes from animal bones, wetland sediments, pollen and glacial deposits, not historical records. Castlepook Cave in County Cork contained cold-adapted fauna; a reindeer femur bearing a possible stone-tool cut mark may indicate human carcass processing about 33,000 years ago. However, disturbed cave deposits and absent associated tools preclude claims of settlement. Derryvree and other inter-till sites reveal open tundra wetlands and regional environmental variation. Ireland may have hosted intermittent visitors, but sustained Upper Palaeolithic occupation remains unproven.