Altimetry down under
Here in Australia: (from our AIP)
2.1.1 The system of altimetry used in Australia makes use of a transition layer between the Transition Altitude which is always 10,000FT and the Transition Level of FL110 to FL125 depending on QNH to separate aircraft using QNH from those using 1013.2HPA as a datum.
FL125 − NOT AVAILABLE WHEN AREA QNH IS BELOW 963 HPA
FL120 − NOT AVAILABLE WHEN AREA QNH IS BELOW 980 HPA
FL115 − NOT AVAILABLE WHEN AREA QNH IS BELOW 997 HPA
FL110 − NOT AVAILABLE WHEN AREA QNH IS BELOW 1013 HPA
Highest mountain - Mt Kosiusko - 7310ft.