The Animals on the Underground Postcard Book features 20 different postcards, each one with a different design. The easy-tear postcards (no perforated edges) feature different Animals on the Underground.  The London Underground Map is an iconic design but when most people look at the 'tube' map, all they see is a pattern of colourful lines that help get them from A to B. But, in fact, hidden within the map, there is a world of animals - the Animals on the Underground. The Animals were discovered by Paul Middlewick in 1988. They are created using the tube lines, stations and junctions of the world famous London Underground map. Paul found the original animal, the elephant, while he was staring at the tube map during his daily journey home from work. Since then, Elephant & Castle, as the elephant is called, has been joined by many others from bats to bottlenose whales.