early spring landscape of mixed forest thicket at the czarna river nature reserve in mazovia region of poland

early spring landscape mixed forest thicket czarna river nature reserve mazovia region poland tree trees wood wooded zimne doly park central empty no people deserted noone mazowsze winter blossom bush track greenery foliage wetland wetlands moor moors lakeland wildlife natural life ecology floral flora plant europe branch color colorful wild botany botanic travel exterior outside outdoor european