Castlepook’s Brown Bear Remains
Archived: 5 October 2026
Abstract
At the notional date of 30,244 BCE, Ireland lay in the Late Pleistocene, as the British–Irish Ice Sheet expanded unevenly towards its maximum. Evidence cannot describe a single year, and glaciation subsequently destroyed or concealed much earlier material. Castlepook Cave in County Cork preserves fauna including mammoth, reindeer, giant deer, brown bear, wolf, Arctic fox and hyaena, indicating varied cold, open habitats and food webs. A possibly tool-marked reindeer bone suggests, but does not prove, human presence around 33,000 years ago. No securely dated settlements or social evidence exist. The period represents an ecological threshold before extensive glaciation reshaped Ireland.