OpenLearn Ireland
Glenariff to Fermanagh
...think, was that the Donegal ice, as it melted back and retreated in that direction, exposed a lower level in the hills, and suddenly that lower level was available for the water in the bath, so to speak, and the water would have rushed out of it. Catastrophically, there would have been huge amounts of water rushing out very suddenly, cutting into the hillside and going...