In Sweden where I am from, most of our folktales are about trolls or female creatures. I remember when I was a child my grandmother always used to tell the story of the mountain troll that lived by the Viking rune stones. The story goes that the troll lived there to protect the treasures left by the Vikings and that if anyone tried to climb the mountain the troll would come out and eat you. Of course this story scared me and my brother to death.
I understand that mostly the story was to protect us from hurting ourselves when we walked around in the woods. Though as we got older me, my brother and our cousins always played on the mountain, but in the back of our minds we always remembered that story of the mountain troll.