Though described as beautiful, the huldra is noted for having a distinctive inhuman feature—an animal's tail (usually a cow's or a fox's) and/or a back resembling a hollowed-out tree.
The hulder is one of several rå (keeper, warden), including the aquatic sjörå or havsfru, later identified with a mermaid, and the bergsrå in caves and mines who made life tough for the poor miners.
Neil Gaiman's novella The Monarch of the Glen, published in the collection Fragile Things, includes references to Hulder legends.
In the subsequent Year Walk: Bedtime Stories for Awful Children, the first chapter is devoted to the Huldra.
In the video game "Bramble: The Mountain King," developed by Dimfrost Studios in 2023, the boss Skogsrå is a Huldra.