When Ur was founded, the Persian Gulf’s water level was two-and-a-half metres higher than today. Ur is thought, therefore, to have had marshy surroundings; irrigation would have been unnecessary, and the city’s evident canals likely were used for transportation.- Josh Kirby (Wikipedia)
Ronald William “Josh” Kirby (27 November 1928 – 23 October 2001) was a British commercial artist. Over a career spanning 60 years, he was the artist for the covers of many science fiction books including Terry Pratchett’s Discworld novels.