Alder swamp forest in Kampinos

Mosses and lichens on the base of an alder tree, growing from the wet, swamp forest floor covered around with decomposing leaves, mostly brown, dried sedges (Carex) of early spring, and a fallen, dead tree trunk or a nurse log. Alder swamp forest in the Kampinos National Park, the large protected area of woods and meadows near Warsaw, in the Mazovia region, Central Europe. Masovian Voivodeship, Poland