In Norwegian folklore it is believed a fairy-woman or nymph named Huldra ("secret" or "hidden") lives in the forest or mountains. Sometimes, she is said to be beautiful, but seen from behind, revealed to be hollow. Other times, she is said to be blue-skinned. In areas where she is known as "skogsnerte" ("blue"), she is said to be coloured blue and wearing a green petticoat.
As Huldra (by which she is most often known), she wears a blue petticoat and a white snood that barely covers a cow-like tail. She is particularly fond of brindled cattle, and keeps a herd of hornless cows. In the mountains, her song can be herd over a great distance- a low and mournful tune.
Aleksander L Nordaas
