clifftop coast concrete geodetic Great Britain landmark location marker Pembrokeshire pillar point sea station survey triangulation trig united kingdom viewpoint wales welsh crosswort Cruciata laevipes England english field flowers green landscape meadow natural nature plants South Downs spring Sussex valley wild yellow cold fence hill light rural snow snowy sunlight track uk view winter beach canada conifers distance distant evening forest holiday island ocean pacific rills sand shore stream vacation vancouver water animal Argynnis aglaja butterfly dark green feed fritillary insect Lepidoptera pattern rest summer wing beech chalk Fagus lane path path through the woods tree wood bridleway countryside exercise footpath peace trail tranquil trees walk woodland woods autumn berries berry bush leaf leaves poisonous red shrub Viburnum Wayfaring tree bank cloud deep edge freezing gray grey high icy margin mountains norway norwegian road route thick transport travel verge white ancient architecture Buckinghamshire cross historical history mill old preacher preaching Quainton stone village wind windmill