Australia is a country located in the Southern Hemisphere, and it is home to many mountains. The crossword solutions for the term 'Australia Mountain' are Adelaide (8 letters), EMU (3 letters), Perth (5 letters), Sydney (6 letters), and OPAL (4 letters). Adelaide is the capital of South Australia and is located on the Adelaide Plains. EMU is a mountain located in the Snowy Mountains of New South Wales. Perth is the capital of Western Australia and is located on the Swan Coastal Plain. Sydney is the capital of New South Wales and is located on the Tasman Sea. OPAL is a mountain located in the Blue Mountains of New South Wales.