Aboriginal art is the art and craft works of the Aboriginal people of Australia. They are created by the many Aboriginal peoples and tribes of Australia or in collaboration with each other. Aboriginal art is based on the ancient stories, or Jukurrpa, and symbols of the indigenous Australians. They are usually centred on the Dreamtime, which is the period of time that the Aboriginal people believe the world was created. These Dreamtime stories are thought to be around 50,000 years old and has remained relatively unchanged for generations.