Masurian canal connects river Pregolya in the kaliningrad oblast of Russia with the Mazury lakes in Poland. The Russian part of canal is abandonned since WW2.
photo taken by Popadin Aleksandr <a href="https://en.wikipedia.org/wiki/ru:%D0%A3%D1%87%D0%B0%D1%81%D1%82%D0%BD%D0%B8%D0%BA:%D0%9F%D0%BE%D0%BF%D0%B0%D0%B4%D0%B8%D0%BD" class="extiw" title="w:ru:Участник:Попадин">w:ru:Участник:Попадин</a> (Попадин Александр Николаевич)
CC BY 1.0
This <a href="https://en.wikipedia.org/wiki/photo" class="extiw" title="w:photo">photo</a> was taken with JVC GR-D200