border descent exclamation red road sign steep triangle warn warning white girls gravel hiking hills Mountain Biking mountains nature sports steep descent architectural architecture background buildings carpark dangers fence fencing high high-rise highrise hill landscape light lighting modern panoramic parking river river-views riverside scenery scenic security shade shadow shadows shrubbery shrubs signs skyscrapers steep-descent sunlight surfaces trees vegetation vehicle views warning-sign water waterways apartment building debt down entrance entree round spiral stairs swirl twist UP view walk ascend ascent blue cloud descend England green ridge sky South Downs stair step steps carriage carry cliff danger english funicular Great Britain Hastings rails railway summer Sussex track transport blocks boat brick cement Jetty lake launch ocean old pier reflection sea seaside seawall stone walkway wharf canada chasm conifer current drop fall flow forest gorge montane mountain natural opening pour Rockies Rocky Mountains surge tree climb climbing distance downhill farm farmland grass livestock narrow rural sheep straight tarmac uphill viewpoint