The block held by the Petermann ALT is surrounded by other Aboriginal land blocks on all sides. It borders the Ngaanyatjarra Lands to the west (in Western Australia), the Aṉangu Pitjantjatjara Yankunytjatjara Lands to the south (in South Australia), Haasts Bluff Aboriginal Land Trust to the north, and Katiti and Urrampinyi Iltjiltajarri Aboriginal Land Trusts to the east.