The Hessdalen Lights are beautiful — but baffling. Scientists have long pondered their cause. But despite numerous investigations and research galore, the reason for this Norwegian phenomenon remains unknown.
The Lights were first reported in the 1930s and have captivated visitors ever since. Sometimes the show lasts for just a few short seconds. But on occasions, the bright yellow, white, red, green and blue lights can shine for well over an hour.
Located in rural Norway, the Lights illuminate a 7.5 mile stretch of the Hessdalen Valley. They can appear during the daytime or at night and appear to drift and float. But no-one knows why, with scientists struggling to find an answer or offer an explanation. The Hessdalen Lights are more prevalent during some periods than others — with sightings spiking in the 1980s, but proving less common in recent times. This just adds to the mystery in a place that continues to confound.