Land snail lineages suggest a Mesolithic-era human migration from Iberia to Ireland: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0065792 …pic.twitter.com/ee9bImoOit
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St George’s Channel presumably would have widened gradually to its current 47 miles.
Interestingly, Ireland's coast seems to have reached current profile, or close to it, much more rapidly than North Sea coast.
Similarly from Belfast to Manchester over Mannin, bottom of shallow seas on sandbanks around estuaries often visible.
We so need that land-bridge to Iberia back again.
Tax-free jamon!
Mind wise ("Map"?) Less of a challenge
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