boulder canada craggy distance distant far height high jasper landscape mountain natural nature panorama peak range river rock Rockies Rocky Mountains rough summit valley view exercise green hike hiking incline Lofoten Islands norway norwegian outdoors path remote rocks slope stones stony track trail Trek walk wild algae chalk cliff coast England erode erosion face Great Britain kent low rockpool sea seaweed shore sky stone tide water animal cow farm field follow lead leader livestock mammal meadow pastoral pasture South Downs summer Sussex three trio Anthyllis Armeria blue coastline Cornish cornwall english flora flowers headland kidney vetch pink spring thrift yellow alone bracken clouds heath heathland isolated lone oak one Quercus robur single tree countryside direction grass hill rural space travel