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Hessdalen light

Hessdalen light

Overview
Hessdalen Lights are unexplained lights (a type of Will-o'-the-wisp ) usually seen in the valley of Hessdalen
Hessdalen
Hessdalen is a 15 km long valley in Norway, located approximately 120 kilometres south of Trondheim city and approximately 35 km north of Røros mining town...

, Norway
Norway
Norway , officially the Kingdom of Norway, is a country in Northern Europe occupying the western portion of the Scandinavian Peninsula, as well as Jan Mayen and the Arctic archipelago of Svalbard under the Spitsbergen Treaty...

.
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Encyclopedia
Hessdalen Lights are unexplained lights (a type of Will-o'-the-wisp ) usually seen in the valley of Hessdalen
Hessdalen
Hessdalen is a 15 km long valley in Norway, located approximately 120 kilometres south of Trondheim city and approximately 35 km north of Røros mining town...

, Norway
Norway
Norway , officially the Kingdom of Norway, is a country in Northern Europe occupying the western portion of the Scandinavian Peninsula, as well as Jan Mayen and the Arctic archipelago of Svalbard under the Spitsbergen Treaty...

.

These lights are well known and have been recorded and studied by physicists. One explanation attributes the phenomenon to an incompletely understood combustion process in the air involving clouds of dust from the valley floor containing scandium
Scandium
Scandium is a chemical element with symbol Sc and atomic number 21. A silvery-white metallic transition metal, it has historically been sometimes classified as a rare earth element, together with yttrium and the lanthanides...

. Some sightings, though, have been identified as misperceptions of astronomical bodies, aircraft, car headlights, and mirages.

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