Archived: 9 September 2026
Abstract
About 31,862 BCE, Ireland lay within the volatile MIS 3 phase of the Late Pleistocene, before the Last Glacial Maximum. Derryvree sediments in Fermanagh indicate an ice-free but severe tundra wetland, supporting mosses, insects and freshwater life between roughly 36,900 and 31,700 years ago. Castlepook Cave in Cork preserves bones of mammoth, reindeer, giant deer, hyaena and other cold-adapted animals, although its deposits span millennia and do not represent one community. A possibly cut-marked reindeer bone suggests brief human activity, not settlement. Ireland was a changing landscape of wetlands, grazing animals, predators, caves and fluctuating ice during this remote period.
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Archived: 9 September 2026
Abstract
About 31,871 BCE is not a meaningful historical year but an approximate label for later MIS 3, roughly 34,000 calibrated years ago. Castlepook, or Mammoth, Cave in County Cork yielded a reindeer femur reportedly bearing stone-tool butchery marks. If confirmed, it may indicate a brief Upper Palaeolithic visit, not permanent settlement. Early excavation, mixed deposits and dating uncertainty require caution. The cave’s fauna, including reindeer, mammoth, giant deer, predators and lemmings, demonstrates a cold, open, changing landscape supporting animals before the glacial maximum. Ireland’s earliest secure human evidence remains a cut-marked bear bone from Clare, dated about 12,810–12,590 calibrated BP.
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Archived: 9 September 2026
Abstract
Around 31,914 BCE, Ireland lay within the climatically unstable Marine Isotope Stage 3, before the Last Glacial Maximum. Castlepook Cave near Doneraile preserves Ireland’s richest vertebrate evidence from this period: mammoth, reindeer, giant deer, bear, spotted hyaena, wolf, Arctic fox, hare and lemmings, indicating cold, open steppe-tundra habitats. Cave deposits were accumulated and disturbed by water, animals and excavation, limiting interpretation. Revised radiocarbon dating supports an older MIS 3 fauna. Cut-like marks on a reindeer femur plausibly indicate Upper Palaeolithic butchery, but cannot prove settlement, population continuity, culture or social organisation. Castlepook nevertheless demonstrates human visits within European ecological connections.
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Archived: 9 September 2026
Abstract
At 31,944 BCE, Ireland was entering a prolonged cold phase, although the extent of advancing ice remains uncertain and the island was not necessarily wholly glaciated. Lower sea levels altered coastlines, but no secure land route is known. Castlepook, or Mammoth, Cave in County Cork preserves Ireland’s richest pre-Last Glacial Maximum vertebrate assemblage, including mammoth, reindeer, giant deer, predators and lemmings, accumulated across many millennia rather than one moment. These animals indicate changing open steppe-tundra environments. Human presence is unproven: possible butcher marks require confirmation, while secure evidence dates only to about 12,800 years ago. Later ice obscured earlier evidence.
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Archived: 8 September 2026
Abstract
Around 31,959 BCE, Ireland was an unstable Late Pleistocene landscape, not a recorded society. Before the Last Glacial Maximum, exposed areas may have supported open steppe and tundra vegetation and fauna. Castlepook, or Mammoth Cave, County Cork, contains bones of mammoth, reindeer, giant deer, bears, wolves, foxes and hyaenas, although its disturbed deposits represent long periods rather than a single moment. A cut-marked reindeer femur may indicate human butchery about 33,000 years ago, but remains contested and lacks context. It cannot prove settlement, culture or routes of arrival. Glaciation, sea-level change and poor preservation leave human presence uncertain, pending research.
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