A little bit of info about elves
According to myth, elves live in large rocks and communicate with humans in a variety of ways.
Signs they’re angry include making cattle ill, souring milk and causing machinery to malfunction. Happy elves can do a lot of good though. They bless farmers with abundant harvests, heal the sick and cause good weather and calm sea.
This is why there are often little elfin doors at the base of trees in gardens, and many Icelanders take care not to disturb their elfin neighbours. Basically it’s considered best to keep on the good side of elves – even if you won’t admit to believing in them!
If you’re visiting Iceland there are several places where you can find out more about Iceland’s elfin folklore.