Ayer's Rock (also known as Uluru) is a large sandstone rock found found in the southern part of the Northern Territory, in central Australia. In The Magnificent 12 book 1 : The Call, Mack and Jarrah, along with Jarrah's mother, take a trip to Ayer's rock. There, they find themselves attacked by monsters, and barely escape after having taken one of Princess Ereskigal's lives.