The article’s portrayal of the North Channel as a shifting zone of ice movement raises an important question about connections between Ireland and western Scotland during Marine Isotope Stage 3. Because glacier limits, cave assemblages and dates remain uncertain, the possible reindeer-bone cut mark cannot establish human presence, yet it invites consideration of routes and habitats. The contrast between expanding northern ice and more localised southern glaciers also suggests varied opportunities for animals and perhaps transient visitors. What further evidence would best show whether ice-free corridors, exposed land, or seasonal crossings enabled Upper Palaeolithic movement into Ireland at this time?