The 1,883-metre (6,178 ft) tall mountain is located on the south side of the town of Rjukan.

[1] The view from the summit is impressive, as one can see an area of approximately 60,000 square kilometres (23,000 sq mi), nearly one-sixth of Norway's mainland.

The summit is accessible on foot in the summer, on a rocky pathway of medium difficulty, although the southwestern side of the mountain is very dangerous and inaccessible.

The wreckage of an airplane crash still lies on that side of the mountain since it is too difficult to remove it.

It was financed mainly by American military grants, and cost one million US dollars to build from 1954 to 1959.