Speilsalen () was a natural

glacier cave A glacier cave is a cave formed within the ice of a glacier. Glacier caves are often called ice caves, but the latter term is properly used to describe bedrock caves that contain year-round ice. Overview Glacier caves form in the bottom edge ...

formed by a river underneath a

glacier A glacier (; or ) is a persistent body of dense ice, a form of rock, that is constantly moving downhill under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires ...

in the

Trollheimen Trollheimen is a mountain range in Møre og Romsdal and Trøndelag county, counties in central Norway. The mountain range is part of the Scandinavian Mountains. Etymology The name ('the home of the trolls') was proposed by Håkon Løken. It is ...

mountains in

Oppdal Municipality is a List of municipalities of Norway, municipality in Trøndelag Counties of Norway, county, Norway. It is part of the Dovre region. The administrative centre of the municipality is the Oppdal (village), village of Oppdal. Other villages in the ...

Trøndelag Trøndelag (; or is a county and coextensive with the Trøndelag region (also known as ''Midt-Norge'' or ''Midt-Noreg,'' "Mid-Norway") in the central part of Norway. It was created in 1687, then named Trondhjem County (); in 1804 the county was ...

county,

Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of ...

. It was located at the northeast base of the mountain Blåhøa. Under favourable conditions late summer, it was possible to walk the from one end to the other underneath the glacier. It was never considered safe to walk under a glacier. Speilsalen collapsed in August 2007.

References

External links

Article with pictures from glaciers in Trollheimen
Glaciers of Norway Oppdal Landforms of Trøndelag Ice caves {{norway-glacier-stub Former glaciers of Europe