The Bergsrå (Mountain Rå), Bergatrollet (Mountain Troll), or Bergakungen (Mountain King) was a mythical creature of the mountain in Norse mythology.
The bergrå could be either masculine or feminine. It lived in the mountain with a court of relatives and sometimes surrounded by trolls. It was a common phenomenon in the mythology about the bergsrå to trick people into their dwellings in the mountain and to become bergtagen (literary: "taken into the mountain").
A typical description of such a claimed occurrence was given by Sven Andersson in 1691 when he was on trial for having sexual intercourse with a female bergrå.[1]