History of the Northern Lights: myths and legends - Hurtigruten
Finnish legend tells of a mythical fox—called revontulet —running across the Arctic fells. As its tail brushes against mountains, it sends sparks flying into the sky , creating the shimmering lights.
Many Inuit communities believe the lights are the spirits of the dead playing a game of soccer in the heavens. They use a walrus skull as the ball , skittering and dancing across the sky.