early spring birch forest on heath sandy dunes of natural landscape protected area of mazovian landscape park in mazovia

betula bio biodiversity birch brown calluna color colorful deserted diversity dune early ecology empty europe foliage forest green greenery heath heather karczew krajobrazowy landscape leaf life litter masovia mazovia mazovian mazowiecki mixed natural nature nobody one otwock outdoor outside panorama panoramic park pattern pendula people poland sand sandy scenic spring thicket travel tree trunks undergrowth vivid vulgaris wild wood wooded