Exposed Celtic Sea Shelf
Archived: 8 September 2026
Around 31,960 BCE, Ireland was a cold, glaciated Late Pleistocene landscape, though not uniformly ice-covered. Lower sea levels exposed surrounding shelf lands, but changing channels, ice and difficult terrain still impeded access. Castlepook Cave in County Cork preserves important, imperfectly excavated animal remains, including mammoth, reindeer, giant deer, bear and hyaena, indicating open habitats and diverse fauna accumulated over long periods. A cut-marked reindeer bone may record butchery by Upper Palaeolithic visitors, potentially Ireland’s earliest human trace. However, no tools, hearths or settlements confirm occupation. Later glaciation and disturbed cave deposits limit interpretation; Ireland remains an intermittently habitable Ice-Age frontier.