Those incredible structures are man-made heaps of slag from Silesian coal mines and steel works! They were seeded with grass and trees to turn them into lush hills.
This is a trip from November 2017. City: Katowice, Poland.
Silesian slagheaps | Ecency
Red Clover Fields / Pola Czerwonej Koniczyny [ENG//PL]arsky ·
