The Saar Polygon in Ensdorf, Saarland is a monument commemorating the coal mining industry in Saarland, which ended in June 2012.[1]
- ^ "Saar Polygon: A Monument to Coal Mining in Germany". Amusing Planet. 2016-10-29. Retrieved 2018-05-09.
The Saar Polygon in Ensdorf, Saarland is a monument commemorating the coal mining industry in Saarland, which ended in June 2012.[1]