Cave Earth at Castlepook
Archived: 21 September 2026
About 30,932 BCE, Ireland lay within the unstable Late Pleistocene climate of Marine Isotope Stage 3, not a precisely recoverable year. Evidence from Derryvree, County Fermanagh, records a locally ice-free interval between glacial advances, with freshwater wetlands, tundra vegetation and cold-adapted insects. Cave deposits at Castlepook, County Cork, preserve a diverse fauna including reindeer, mammoth, giant deer, predators and smaller mammals, though species were not necessarily contemporary. A marked reindeer femur, dated around 33,000 years ago, may indicate human butchery, but proves neither settlement nor population. Climate, ice, water and animal movements, rather than politics or culture, shaped this landscape.