Hessdalen

Hessdalen

Unknown lights began to show up in the Hessdalen valley in December 1981. With no state institution taking it up, five people set up Project Hessdalen, and from 21 January to 26 February 1984 its volunteers watched the valley with cameras and spectral gratings, a radar, a spectrum analyser, a magnetometer, a seismograph, a laser, Geiger counters and infrared viewers, helped by the Norwegian Defence Research Establishment and universities. Of 188 reports, 135 were put down to known lights; the radar made 36 recordings, three of them probably of a light that was also seen. The report, signed by Erling Strand on 5 January 1985, concludes: “We have not found out what this phenomenon is.”

Source document: Original public reference