bridleway direction England field Great Britain hike journey landscape natural nature path ridge sky South Downs space Sussex track travel view walk walker autumn distance farm fence hill meadow peace post rural approach cloud come cumulus dominant dominate Downs foreboding green grey hedge ominous south storm summer distant english grass slope cereal crop grain harvest heads ready ripe stalks Triticum wheat clouds clusters pasture schools shoals Weald chalk countryside empty panorama pastoral tranquil exercise footpath leisure Trek winter botany flora flowers fragrant orchid Gymnadenia conopsea orchidaceae petals pink plant wild