The Myrkálf Camp is a new random type of Tile introduced in Northgard: Ragnarok. The dwelling of the Myrkálfar acts as their base of operation. Destroying it is not the only way to stop them and prevent future conflicts. Trading stones with them stops future attacks, once they turned into friends.
Like other camps, at least 2 or 4 Myrkálfar will spawn from the tile on which these camps are located.