Both the city and wasteland

View from the hill to the city. The land of miners and metallurgists. In the background, not mountains, but waste heaps - huge heaps of spent rock. They are everywhere, because coal mining has been going on here for more than a century.
Once the heaps were outside the city, but cities are growing and now it is common in the sleeping areas. I would not be surprised if in 30-40 heaps will be in the center by the time of a significantly grown city