In downtown Vopnafjörður, right across from the slaughterhouse, there’s a fine elf hill. Gunnar Gunnarsson grew up in this neighbourhood. He would have seen this hill everyday, and no doubt climbed it often.
Now, it might be hard to visit a “real” elf here (at any rate, it’s out of your control), but you can visit Gunnar.
He has flowers and birds, and place for you to sit down.
This is a pre-Happy-Camper kind of Icelandic travel. There are a lot of Icelanders honours with their very own copper head in the trees. To visit them is a kind of pilgrimage.