agaric autumn fly agaric forest Forest Floor Forrest green mushroom red summer wood woods animal antler antlers deer fall male mammal nature Nyberg plain stag trees amnimal Denmark dyrehaven life park wild dead deceased felled forestry management pines Stump tree trunk wooden woodland aspen bark canada deciduous landscape natural populus Rockies Rocky Mountains white conifers jagged mountain peak sharp summit branch branches colors HDR leaf leafs sky UP