Mammoth Cave’s Open Tundra
Archived: 22 September 2026
About 30,894 BCE, Ireland cannot be assigned a specific historical event, but evidence from Derryvree, County Fermanagh, and Castlepook Cave, County Cork, illuminates Middle Devensian conditions. Derryvree sediments, broadly dated to 34,950–29,750 BCE, indicate ice-free, wet, treeless tundra with sedges, mosses, herbs and pools. Castlepook bones show intermittent cold-adapted fauna, including mammoth, reindeer, giant deer, Arctic fox and hyaena, in open habitats. A marked reindeer femur may suggest brief human presence, but remains unproven. Later ice expansion erased much evidence, leaving Ireland an intermittently habitable Atlantic frontier rather than a documented society, with no recoverable annual narrative or settled population.