Masurian Lake District The lake district was shaped by the Pleistocene ice age. Many of its hills are parts of moraines and many of its lakes are moraine-dammed lakes.
The Masurian Lake District or Masurian Lakeland (Polish: Pojezierze Mazurskie) is a lake district in northeastern Poland (Masuria) containing more than 2,000 lakes. It is currently in the run for being listed into one of the New7Wonders of Nature.