water filled flark in a bog of biosphere reserve black moor in rhoen, germany, by dusk

background biosphere biotope black bog bushes central conservation cotton-grass darkening dusk dusky ecosystem environment europe european flora flowering german germany growth habitat heather hollow landscape late light marsh marshy moor mystic natural nature night plants pond raised reserve rhoen rhon scene scenery schwarzes silence sky spring summer sunset terrain unique vegetation vegetative wallpaper water wet wetland wetlands moorland