A remote Russian city branded “the most depressing on Earth” is built on a former Soviet prison camp, and has a life expectancy 10 years below the national average.
Norilsk, which is located in the Arctic permafrost, has 45 days of continuous darkness per year and average January temperatures of -30C.
Factory runoff is believed to be responsible for the blood-red colour of a river that runs through the city, with pollution levels so high in the area it reduces the life expectancy of its residents to 59-years-old.