Elephant Road
The Elephant Road is the title of a long narrative poem by Felicity Beedle, quoted in part in The Compleat Discworld Atlas. It tells the story of the mysterious Elephant Road out of the Kingdom of Howondaland, created when for no immediately explicable reason, up to a thousand elephants chose to form a super-herd and migrate. Some say they made it as far as distant Ankh-Morpork. Even today, some years on from the event, the Elephant Road leaves visible traces in the form of flattened jungle, bare grassland and collapsed river banks. And some extremely lush vegetation growing in lots of mysteriously enriched soil.