bridleway chalk destination direction distance distant down downhill England english farm fence field footpath forest goal grass Great Britain green hill landscape meadow path post South Downs Sussex track trail travel Trek view walk abundance abundant blue border clouds ecology flora flowers habitat margin nature plants profusion rich sky summer umbellifer verdant verge white wild yellow countryside Cross-country explore fun hobby long-distance panorama pastoral ridge rural 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 exercise hills steep 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 aerofoil descend glider hang-glider land landing parachute paraglider