banks canal England english Great Britain nature path peaceful reflection river summer Sussex towpath track tranquil trees water waterway bank barge boat calm channel concrete entrance exit footpath light narrowboat tunnel attraction boats bridge city leisure tour tourist urban view york arch architecture brick Muscovy duck rural watercourse wiltshire branches bridleway February reeds still sunny trail winter choked decay desuetude disrepair disuse historical old chair folding life living plank seat reflections sky dappled green ripples shade shadows shady verge waterside Basingstoke Canal Hampshire spring travel