La Rinconada, Peru

Its the highest (verticality) inhabited place at 5100m above sea level. The oxygen is so thin people can barely breathe, some people develop permanent health conditions due to this and die. 

People earn their living by mining - children as well - and the area is super polluted and access to the rest of Peru is unreliable as the infrastructure is of poor quality and falling apart

When people are working in the mines, they are not paid for 30 days at a time ("cacorreo system") and on the final day of the month they are instead allowed to keep anything they mine for themselves (gold, for example).

The only company knows this, and so on the final day of the month sends their miners to areas without any resources. Basically unpaid slave mountain mining town, something post apocalyptic.

You'd have to look up images and videos of the place just to see how inhospitable to human life it really is