river krowka in northern poland near koronowo lake.

bydgoszcz krowka lesna zalew koronowski river krowka koronowo koronowo lake koronowo reservoir kujawsko pomorskie polish landscape forest lake scenic tranquil rural countryside beautiful poland season grass beautiful visit poland scenery calm sky green nature forest view water tree travel background lake park tourism summer spring river landscape natural poland destination pomerania pomeranian landscape polish landscape