chalk chalky countryside England english exercise footpath Great Britain hill landscape nature plants ridge rural slope South Downs summer Sussex track trail travel walk changeable clouds crop farm field hedge moody shadow sky varying woodland ascend direction goal grass green journey path peace peaceful purpose rise route sunlight tranquil Trek view way Apulia butterfly flowers Gargano italian Italy orchids Orchis papilionacea pink Puglia spring wild tree uk united kingdom wiltshire euphorbia hillside natural rocks spurge stone stony verge Buckinghamshire Dark Mullein perennials Scrophulariaceae spikes Verbascum nigrum yellow Anacamptis pyramidalis orchidaceae pyramidal orchid panorama pastoral