Fascinating drone footage of Mount Schmidt, Norilsk, the site of a former Gulag prison camp during the Soviet era.

As the snow melts in the industrial Arctic Circle city every June, the streams carve new paths down the mountainside, throwing up human bones.

Known as Golgotha to locals, the number of deaths at the camp still remains a mystery.

The site is one of the most remote in the world. After nickel deposits were discovered in the 1920s, the area was turned into a forced labour camp under Stalin in the 1930s.

The camp was closed in 1956 but its presence lingers, preserving the memory of the camp's victims. It is "a monument to the victims of political repression," said the filmer.

Today, Norilsk is home to Norilsk Nickel (Nornickel) – the metals and mining operation overseen by its biggest shareholder, tycoon Vladimir Potanin, which accommodates around 60,000 employees.

However, conditions still remain harsh. For three months a year, the sun doesn't rise, and it remains covered by snow for more than 250 days a year.

Golgofa, gulag, Norilsk