autumn panorama of mixed forest thicket at czarne jeziorka black pond peat bog reserve in mazowiecki landscape park in poland

activity autumn background biology black bog celestynow conservation czarne diversity europe fall flora forest greenery jeziorka karczew krajobrazowy lake landmark landscape leaf mazovia mazowiecki mazowsze moor natural nature otwock outdoor park peat plant poland polska pond postcard protection reserve swamp thicket torf tourism touristic travel tree trekking trunk vegetation wallpaper warsaw warszawa water wet wetland wood wooded