Year by Year
Explore Year by Year articles from the most modern historical year back to the oldest.
3,307 Articles Archived
Fermanagh Grasslands
Archived: 19 September 2026
31,142 BCE is not archaeologically precise, but falls within MIS 3, a fluctuating Late Pleistocene phase. At Derryvree, County Fermanagh, organic freshwater sediments dated by BIRM-166 indicate a cold, periglacial wetland between ice advances, supporting grasses, sedges, juniper, mosses and shallow pools. Crag Cave evidence confirms climatic variability. Castlepook Cave, County Cork, preserves bones of mammoth, reindeer, giant deer, bear and hyaena, accumulated over extended periods. A possibly cut-marked reindeer femur suggests a transient Upper Palaeolithic human presence, but proves neither settlement nor culture. Ireland was a changing, largely treeless landscape repeatedly transformed by advancing ice with limited surviving evidence.
Provisional Toolmark
Archived: 19 September 2026
Around 31,143 BCE, Ireland experienced the unstable Late Pleistocene climate of Marine Isotope Stage 3, before maximum glaciation. Evidence is fragmentary and local. Derryvree, County Fermanagh, preserves an ice-free periglacial wetland, dated broadly to 36,900–31,700 years ago, supporting tundra vegetation, insects and shallow pools before later burial by ice. Castlepook Cave, County Cork, contains mixed remains of reindeer, mammoth, giant deer and predators, demonstrating cold-adapted fauna but not a single contemporary ecosystem. A reindeer femur may bear a stone-tool cutmark, suggesting brief Upper Palaeolithic carcass processing. However, it does not establish settlement, routes, culture or permanent human occupation in Ireland.
Maguiresbridge Grasses
Archived: 19 September 2026
Around 31,144 BCE, Ireland lay within the unstable MIS 3 phase of the Late Pleistocene, not a datable historical moment. At Derryvree near Maguiresbridge, sediments between glacial tills preserve an ice-free, treeless freshwater wetland of sedges, grasses, mosses and Arctic-alpine plants, formed between advances. Southern caves, especially Castlepook, contain remains of mammoth, giant deer, reindeer, predators and other cold-stage fauna, though not necessarily contemporaneous. A possibly cut-marked reindeer bone suggests transient human activity, but no settlement is securely known. Ireland had no documented polities or farming; climatic change, shifting ice and ecological variation defined this severe, continually changing island landscape.
Dwarf Willows
Archived: 19 September 2026
Although 31,145 BCE cannot be assigned precisely, Derryvree, County Fermanagh, preserves a freshwater interval between glacial tills, broadly dated to 36,900–31,700 calibrated BP. Its silts and organic remains reveal treeless, cold, waterlogged tundra with sedges, mosses, dwarf willow and Arctic-alpine plants, demonstrating local wetland life amid fluctuating MIS 3 conditions. Later ice buried and preserved the deposit. Southern caves show mammoth, reindeer, giant deer and predators inhabited Ireland during the broader period. A marked reindeer femur from Castlepook suggests possible human butchery, but no secure occupation evidence exists. The record supports ecological reconstruction, not annual events, settlements, polities or beliefs.
Cave Hyenas
Archived: 19 September 2026
Thirty-one thousand years BCE is an imprecise modern label for a Late Pleistocene interval, not a documented Irish year. During Marine Isotope Stage 3, Ireland experienced cold, treeless, changing conditions, with ice margins and sea levels fluctuating. Derryvree, County Fermanagh, preserves wetland deposits indicating ice-free ground before later glacial advance. Castlepook Cave, County Cork, contains diverse fauna, including reindeer, mammoth, giant deer, bear, Arctic fox, lemmings and cave hyena, demonstrating intermittent ecological connections with Eurasia. Possible butchery marks suggest human presence, but remain unconfirmed. No settlements are known. Later ice expansion transformed habitats and destroyed or buried much physical evidence.
Glacial Marshland
Archived: 19 September 2026
Around 31,147 BCE, Ireland lay within the volatile Late Pleistocene, not a historical year. Organic wetland deposits at Derryvree, County Fermanagh, dated broadly enough to encompass this period, record freshwater habitats between glacial advances. Plant, insect and sediment evidence indicates cold, open, tundra-like terrain with marshes, pools and locally ice-free ground, rather than uniform ice cover or forest. Castlepook Cave, County Cork, preserves diverse Ice-Age fauna, showing Ireland’s ecological connections with north-west Europe. A possibly butchered reindeer bone suggests human presence, but remains unconfirmed and cannot demonstrate settlement. The evidence reveals a shifting, varied landscape whose human history remains uncertain.
Castlepook Ungulates
Archived: 19 September 2026
31,148 BCE is a retrospective date within Marine Isotope Stage 3, not a recoverable Irish year. Derryvree, County Fermanagh, preserves freshwater sediments dated broadly to 36,900–31,700 years before present, revealing cold, treeless tundra wetlands between glacial advances. Ireland’s climate, ice extent and coastlines changed regionally, while access routes remained uncertain. Castlepook Cave, County Cork, contains remains of reindeer, mammoth, giant deer and carnivores, demonstrating an Ice Age fauna but not a single contemporaneous community. A possibly tool-marked reindeer femur may indicate early human activity, yet lacks secure context. Later glaciation reshaped landscapes and obscured evidence, leaving a cautious landscape record.
Glacial Bogbean
Archived: 19 September 2026
Approximately 31,149 BCE is a notional date within Marine Isotope Stage 3, not a recordable Irish year. Derryvree, County Fermanagh, preserves organic sediments between glacial tills, indicating a locally ice-free, treeless freshwater wetland with sedges, mosses, bogbean and other cold-adapted plants. Castlepook Cave, County Cork, contains a diverse pre-Last Glacial Maximum fauna, including mammoth, reindeer, giant deer, bears, wolves, lemmings and spotted hyaena. These deposits represent extended, disturbed periods rather than a single ecosystem. No secure evidence establishes human settlement; a possibly cut reindeer bone suggests only unresolved, early human activity. Ireland was environmentally dynamic, variable and vulnerable to ice.
Wandering Mammals
Archived: 19 September 2026
At 31,150 BCE, Ireland lay within the unstable cold conditions of Marine Isotope Stage 3, before the last British–Irish Ice Sheet's maximum. Derryvree, County Fermanagh, preserves freshwater sediments between glacial tills, demonstrating a locally ice-free periglacial interval with open tundra vegetation, pools and sparse herbaceous cover. Cave faunas show that mammals including reindeer, giant deer, mammoth, wolves and hyaenas occurred during the wider period, although dates and contexts vary. A cut-marked reindeer bone from Castlepook Cave may indicate human butchery, but cannot prove settlement. Evidence portrays fluctuating tundra, freshwater habitats, animal movement and uncertain human opportunities, later obscured by glaciation.
Fermanagh Bogbean
Archived: 19 September 2026
Around 31,151 BCE, Ireland lay in climatically unstable Marine Isotope Stage 3, not a datable historical moment. At Derryvree, County Fermanagh, freshwater sediments between glacial tills, radiocarbon-dated broadly to 36,900–31,700 calibrated BP, record an ice-free local basin before later glaciation. Mosses and plant remains, including bogbean and mountain avens, indicate open tundra wetland with sparse vegetation and severe seasonal conditions. Wider fossil evidence documents reindeer, mammoth, giant deer, wolves and hyaenas, though not contemporaneous communities. No secure human settlement is known; possible cut marks on a reindeer bone remain unconfirmed. Subsequent ice expansion remodelled Ireland and obscured evidence of life.
Some records do not yet have a verified historical year and are awaiting chronological placement.