The alfkors (or alvkors; english: elf cross).  A Scandinavian symbol to ward off malevolent elves.
Originally uploaded May 14, 2007, by Berig on English Wikipedia<a class="external autonumber" href="https://en.wikipedia.org/w/index.php?title=Elf&amp;diff=130763578&amp;oldid=130762865">[1]</a>
2007-08-12
Nordisk familjebok, which is in the public domain