Some Celts drowned when doggerland became dogger island then dogger bank as the glaciers retreated. The sea flooding all the land must have been a surprise for them, no high land was high enough
That was a few thousand years before Celts were around.
Edit: It was also pretty slow; it was a couple of hundred miles across and took three thousand years to disappear, so it’s on the order of a few miles in a lifetime.
Some Celts drowned when doggerland became dogger island then dogger bank as the glaciers retreated. The sea flooding all the land must have been a surprise for them, no high land was high enough
That was a few thousand years before Celts were around.
Edit: It was also pretty slow; it was a couple of hundred miles across and took three thousand years to disappear, so it’s on the order of a few miles in a lifetime.