England english exercise footpath Great Britain green natural nature path peace spring Sussex track trail tranquility trees Trek walk woodland autumn Betula birch bridleway conifer evergreen forest landscape pine Pinus scots pine softwood sunlight Surrey tree trunk blooming blue brown cliffs desert Dirt flowers pines plants red Red Rocks sagebrush sand sky springtime 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 wood austere bare bleak canada debris glacier hard peak retreat rock Rockies rocky Rocky Mountains scraped scratched scree stern cloud countryside field hill South Downs summer altitude architecture flow high home house isolated montane norway norwegian ridge valley water scattered