It stretches over 5700 ha and consists mainly of bogs, carr forests and dunes around Lake Pape.

Large grazers, like heck cattle, konik horse and European bison have been introduced to the reserve with support of the WWF.

Before the introduction of the three large herbivore species, the reserve was already home to moose, red deer, roe deer, wolf and lynx.

So the reserve harbours now an almost complete Holocene mammal fauna.

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