Abraham Ortelius “Septentrionalium Regionum Descrip”. Map of Scandinavia, Greenland, Iceland, England and the fantasy island “Frisland” 48 x 57 cm. (18.9 x 22.4 in.) close Medium Hand-colored ...

But an island in itself always turns its energy inwards. So cultures on islands are also bred during winter. It's bred from the population that is there and who are stuck there.