autumn Betula birch bridleway conifer England english evergreen footpath forest Great Britain landscape nature path pine Pinus scots pine softwood sunlight Surrey track trail tree trunk woodland blooming blue brown cliffs desert Dirt flowers green pines plants red Red Rocks sagebrush sand sky springtime trees Utah alignment animal bellwether clouds herd line meadow mountain mountains pasture road rocks sheep sheeps stones wool angle begin beginning burn cold cross frozen journey metal over pedestrian perspective river rust snow stream walk wood austere bare bleak canada debris glacier hard natural peak retreat rock Rockies rocky Rocky Mountains scraped scratched scree stern Trek cloud countryside field hill South Downs summer Sussex altitude architecture flow high home house isolated montane norway norwegian ridge valley water scattered december exercise shadow winter