This restricted area was established to protect a high-type swamp, a swampy forest and a series of rare birds. The Niedrāji-Pilka swamp can be crossed with dry feet while enjoying almost virginal nature. This is possible on the narrow-gauge railroad embankment which runs through the swamp for three to four kilometres from the North-east to the South-west, or on the well-appointed circular wood pathway which is on the eastern size of the embankment.
