The Discworld travels through space on the back of four giant elephants who in turn stand on the back of great A'tuin the world Turtle (sex unknown) who gently swims through the ocean of space. The first discworld novel sets the bar high and Pratchett has delivered time and time again. A must read for the beginning Pratchett fan; Introducing Rincewind the failed wizard, Twoflower the Discs first tourist and a collection of some of the sweet and unsavoury characters that inhabit the Discworld.