@ai6yr Very rare. The Scandinavian Mountains are very old and sleepy.
@ai6yr That's for the mainland. Jan Mayen is on the same fault as Iceland and similarly active.
@ai6yr The Jan Mayen Wikipedia page is fascinating.
The island has its own postcode but delivery in winter is unreliable. The landing strip is long, but landing is by visual only.
There are polar bears and they are genetically distinct from polar bears in other parts of the Arctic.