The article’s juxtaposition of Derryvree’s wetland archive and Castlepook’s complex cave deposits suggests that Late Pleistocene Ireland contained shifting ecological niches rather than a single frozen landscape. Yet the possible cut mark on a reindeer bone leaves human presence uncertain: it could reflect a brief visit, carcass processing elsewhere, or activity not yet represented by settlement evidence. This uncertainty matters because changing coastlines, ice, and animal movements may have shaped access differently across time and regions. What kinds of future evidence would persuasively clarify whether people made occasional expeditions or recurrent seasonal use of Ireland during Marine Isotope Stage 3?