The Finke River, or Larapinta in the Indigenous Arrernte language, is a river in central Australia, the bed of which courses through the Northern Territory and the state of South Australia. It is one of the four main rivers of Lake Eyre Basin and is thought to be the oldest riverbed in the world. It flows for only a few days a year. When that happens, its water usually disappears into the sands of the Simpson Desert and rarely, if ever, reaches Lake Eyre.