nature reserve. ponds formed as a result of mine sinkholes. "zabie doly" ,chorzow, poland

postindustrial lake reservoir panorama pond bayou landscape fishery anglers revitalization reeds cane pan ground subsidence heaps duck wild nature reserve post industrial chimney scenery outdoors poland slask silesia chorzow chorzasup3 sky habitat birds park horizon view recreation environment trees outdoor green water afrac14 abie doay zabie doly ponds formed result sinkholes reserve sinkholes poland