forest green highlands landscape leaves natural nature river rocks rocky scenery stream tree trees water wild aspen autumn birch trees fall ivy shallow DOF trunks white woods fungi fungus glossy macro mushrooms orange tree trunk yellow brick bricks debris old pebbles ruin ruined stone wall stones wall walls wood branch dead floor ground mature woodland empty fog park path pond road alone birch broken clouds field mountain valley fire fireplace firewood stack warm winter change color colorado leaf mountains season Fir fresh freshness moss spring sunshine trunk canada destination direction hike hiking track trail travel Trek