Struffelt Nature Reserve, near Roetgen-Rott, part of the Eifelsteig long-distance hiking trail, Hohes Venn-Eifel Nature Park, NRW, Germany Stock Photo - Alamy
The nature reserve Kirchheller Heide, The Pfingstsee lake, created by mining subsidence caused by coal mining, near Bottrop, NRW, Germany Stock Photo - Alamy
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Nature reserves in NRW: Holiday Travel Tips
The nature reserve Kirchheller Heide, The Pfingstsee lake, created by mining subsidence caused by coal mining, near Bottrop, NRW, Germany Stock Photo - Alamy