aerate aeration architecture buttresses cascade cascading dam danger drop Elan Valley fall hold landmark old reservoir retain stone wales wall water welsh beautiful beauty common spotted orchids Dactylorhiza fuchsii Devil's Dyke England english flowers Great Britain hillside natural nature quality slope spring Sussex wild clifftop coast concrete geodetic location marker Pembrokeshire pillar point sea station survey triangulation trig united kingdom viewpoint crosswort Cruciata laevipes field green landscape meadow plants South Downs valley yellow barrier brick decorative driveway gates oak ornamental ornate privacy private rural secluded trees wooden woodland cold fence hill light snow snowy sunlight track uk view winter beach canada conifers distance distant evening forest holiday island ocean pacific rills sand shore stream vacation vancouver beech chalk Fagus lane path path through the woods tree wood brasil brazil Brennand cidade city cloud clouds clound clounds escultura Landmark Zero Marco Zero Pernambuco Recife scene sculpture sky travel trip bank deep edge freezing gray grey high icy margin mountains norway norwegian road route thick transport verge white Birling Gap cliff cream face height rock rockfall