cloud clouds forest forests green hill hills horizon leaves mountain mountains nature observation panorama path skies sky tree trees view wood woods branch light tree branch berlin blue environment forest pines landscape landscapes pine pines Pinus sylvestris scotch pine scots pine snow tall winter high outlook perspective upwards ascend ascent choice choose climb forested fork heather join low road rock rocks route stone stones train woodland autumn brown fall HDR leaf leafs natural November october plant range temperate broadleaf and mixed forest vegetation leave walk abstract infrared Tropical Tree