abundance abundant blue border clouds ecology England english field flora flowers Great Britain green habitat hill landscape margin meadow nature plants profusion rich sky South Downs summer Sussex umbellifer verdant verge white wild yellow chalk countryside Cross-country explore farm fence footpath fun grass hobby long-distance panorama pastoral path ridge rural track trail view walk walker animal b/w bitter bleak chilly cold February flock freezing gloomy hard harsh mammal natural sheep slope snow snowy winter cycle cycling cyclist gate mountainbike move ride ancient bank Cissbury Ring dusk earthworks evening fields fort historical Iron Age old remnant shadows Devil's Dyke down exercise forest hills steep travel trees woodland action aerial aerofoils air cloud color colour diversity fly glide gliders group hang-gliders on the move outdoor parachutes paragliders soar sport suspend