environment green health high hike hill landscape Mallorca mountain mountains nature open outdoors pine ridge sky top tourism travel tree trees Trekking view wild wilderness countryside direction distance distant England english field grass Great Britain natural rural slope South Downs space summer Sussex track ah branches bridleway destination exercise footpath Fraxinus oak path Quercus trail walk winter boulder canada craggy far height jasper panorama peak range river rock Rockies Rocky Mountains rough summit valley algae chalk cliff coast erode erosion face kent low rockpool sea seaweed shore stone tide water autumn beauty colours fall haven lake peace pool quality rainbow rest ripple scenic stormy sunlight tranquil wood bare exposed mollusc mussel shellfish winkle ascend ascent climb climbing descend descent downhill farm farmland livestock narrow road sheep steep straight tarmac uphill viewpoint