Final photo in the series from Bingley Five Rise Locks when they were emptied for repair work. Another close study: stone, wood, metal, moss and weed - all provide interesting textures.  Don't be fooled by the scale though... these are huge structures!  The portion of the gate showing in the top photo is about ten feet (3m) high and the whole gate is something like 23 feet (7m) tall.  The men in the photo below were both around 6 feet tall and only just reach the third horizontal beam.