sentences:  A sophisticated form of sign language is also used by some Kaytetye.In Norman Tindale's estimation the Kaytetye's traditional lands extended over roughly , to the southeast of Tennant Creek, taking in Elkedra, Gastrolobium Creek, Frew River, Whistleduck Creek, the headwaters of the Elkedra River, the Davenport and Murchison Ranges, together with Mount Singleton.Their northern frontier was roughly north of Kelly Well, while the southern boundary was close to Mount Octy.