From BBC:
Researchers
believe the first known humans to set foot on Ireland thousands of
years ago were most likely from Wales, following the "exciting"
discovery of ancient cave art.
During
the most recent Ice Age, when much of the British Isles were beneath a
vast continental glacier, the depleted sea levels opened a "lost land
bridge" between modern-day Pembrokeshire and the south-east tip of
Ireland, around Rosslare.
According
to rock expert Dr George Nash, from Liverpool University, the
opportunities presented by this pathway would have been too good for
hunter gatherers to ignore.
Now,
alongside an international team of experts, Nash has located eight cave
sites in south-west Ireland featuring rock art dating back from at
least 15,000 years ago, around 5,000 years before the previous oldest
example of humans in Ireland.
Nash,
who coordinated the Lost Land Bridge Project, said there would have
been a forested and grassland plateau around 46 miles (76 km)
coast-to-coast.
With
summertime temperatures typically -10°C to -20°C, Nash said the pathway
would have supported wild horses, mammoth, bison, reindeer and other
large herbivores, which fed off the hardy sedges, mosses and lichens
growing through the fertile, but near-frozen soil. (Read more.)
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