Mammoth Cave’s Long Shadow
Archived: 17 September 2026
About 31,400 BCE, Ireland lay in the climatically unstable later Middle Midlandian, before the Last Glacial Maximum. Ice advances varied regionally, repeatedly reshaping exposed lowlands, coasts and deposits. At Derryvree, Fermanagh, freshwater sediments between tills record treeless tundra wetland, demonstrating an interval of cold, periglacial life. Castlepook Cave, Cork, preserves mixed remains of mammoth, reindeer, giant deer and other cold-adapted fauna, indicating ecological connections with north-west Europe but not a single contemporaneous community. A marked reindeer femur may indicate human butchery, possibly Ireland’s earliest evidence of people. Without associated artefacts or settlement remains, any human presence remains uncertain and brief.