Not sure what sheep have to do with it. We did not herd sheep that far back. We killed whatever animals we could catch. But there were animals on the Feroe Islands. And they walked there. Within the past 20,000 years there was a land bridge from Iceland to France. It may have been ice in parts. But for the most part it was land. We have found hippo and hyena remains in England. People were there as well, or at least neanderthals were there. But I don’t believe that herding sheep goes back that far. Farming and herding is somewhere between 5,000 and 10,000 years old. And it was certainly after the last ice age.