Tasmania lies to the south of, for 10 points, what island nation whose largest city is Sydney?
This country's extinct Mt. Gambier forms four crater lakes and it is bounded to the north by the Arafura Sea. A treeless limestone plateau called Nullarbor Plain lies on its large southern bight. The Bass Strait separates an island state from its mainland, and this country's Cape Yorke Peninsula serves as a border to the Gulf of (*) Carpentaria and as the northern terminus of the Great Dividing Range. Other features of it include Lake Eyre and the Great Sandy Desert. Tasmania lies to the south of, for 10 points, what island nation whose largest city is Sydney?
This country's extinct Mt. Gambier forms four crater lakes and it is bounded to the north by the Arafura Sea.
Commonwealth of {Australia}