Fascinating drone footage of Mount Schmidt, Norilsk, the site of a former Gulag prison camp during the Soviet era. <br /><br />As the snow melts in the industrial Arctic Circle city every June, the streams carving new paths down the mountainside, throwing up human bones.<br /><br />Known as Golgotha to locals, the number of deaths at the camp still remains a mystery. <br /><br />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. <br /><br />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.<br /><br />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. <br /><br />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.