\'The myth of Celtic and Roman Britain\'

[Phaichtos]

Totally agreed. My point though is that even the Romans who for much of their history were essentially landlubbers saw the ease and necessity of transport by water; for residents of ancient Atlantic Europe, travel by water would have made just as much if not more sense. Hence, I don't think it is crazy to assume that some kind of connection between ancient northern Spain and Ireland occurred , whereas contact between northern Spain and geographically closer regions in say central Gaul were more problematic and less frequent.