Castlepook’s Single Incision
Archived: 26 September 2026
Abstract
30,670 BCE is a label within a broad Late Pleistocene environmental horizon, not a datable Irish event. At Derryvree, County Fermanagh, freshwater sediments between glacial tills indicate locally ice-free, cold tundra conditions, with wetland plants and insects, before later glaciation. Castlepook Cave, County Cork, yielded diverse fauna, including mammoth, reindeer, giant deer and predators, demonstrating an open, cold environment, though mixed cave deposits cannot provide a snapshot. A marked reindeer femur may record stone-tool butchery around 31,000 BCE, but remains unconfirmed and cannot prove settlement. Secure evidence for humans in Ireland is later, while political and social history remain unknown.