Archived: 8 September 2026
Abstract
About 31,989 BCE, Ireland lay within Marine Isotope Stage 3, a cold Late Pleistocene interval preceding the last ice sheet’s greatest expansion. Evidence from Fermanagh, notably Derryvree freshwater sediments, indicates locally ice-free, open, treeless tundra or wet muskeg, with sedges, grasses, mosses and pools. Glacial landforms and offshore records show an ice mass developing unevenly, not uniform island-wide cover. Fossils suggest intermittent presence of large mammals, including mammoth and reindeer, but cannot establish contemporaneous communities. Lower sea levels altered coasts and access. No credible evidence demonstrates human occupation. Environmental phase helped create landscapes and conditions encountered by Ireland’s Mesolithic settlers.
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Archived: 8 September 2026
Abstract
Around 31,993 BCE, Ireland was a cold, unstable landscape during the later Last Glacial Period, not a documented human society. Calendar-year precision is impossible: radiocarbon and geological evidence provide only broad, uncertain ranges. Fermanagh deposits indicate open tundra, severe seasons and sparse vegetation, while changing ice and lower seas altered terrain and coastlines. Castlepook Cave preserves diverse Late Pleistocene fauna, including mammoth, giant deer, reindeer, predators and smaller mammals, demonstrating connections with north-west Europe, though not their presence in one year. No securely dated Irish settlement, tools or burials exist from this period. Later glaciation reshaped landscapes and obscured evidence.
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Archived: 8 September 2026
Abstract
Approximately 34,000 years ago, Ireland was a cold, unstable Late Pleistocene landscape of open tundra-steppe, changing sea routes and advancing glaciation. Castlepook Cave, County Cork, preserves Ireland’s richest pre-Last Glacial Maximum vertebrate assemblage, accumulated over millennia and disturbed by natural processes and excavation. Its remains include mammoth, giant deer, reindeer, bears, hyaenas and other cold-adapted fauna, demonstrating episodic animal occupation rather than a single ecosystem. A reindeer femur bearing possible stone-tool cut marks may indicate a brief Upper Palaeolithic human visit around 33,000 years ago, but cannot prove settlement. Further research is needed; secure Irish occupation appears much later substantially.
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