Huldra

The huldra ('hidden one') belongs to the hulder-folk, a class of beings hidden from ordinary sight. In Norwegian tradition she appears as a beautiful woman herding cattle in remote mountain pastures. She was said to be created when Eve hid some of her unwashed children from God — those children became the hidden folk. A man who married a huldra and treated her well would find her beauty fully human on their wedding day.

A tall, strikingly beautiful woman with long golden hair, seen from the front. Her back is hollow like a rotted tree trunk (Norwegian tradition) or she has a long cow's tail (Swedish tradition). She dresses as a farm girl and often has cattle with her.

Could grant hunters and fishermen extraordinary luck or destroy it entirely. Supernaturally strong — able to twist iron horseshoes into knots. Could lead men astray in the forest so they were lost for days. Some accounts give her control over the forest animals.