Mount Kosciuszko is mainland Australia's highest mountain, at 2,228 metres above sea level. It is located on the Main Range of the Snowy Mountains in Kosciuszko National Park, part of the Australian Alps National Parks and Reserves, in New South Wales, Australia, and is located west of Crackenback and close to Jindabyne, near the borde…Mount Kosciuszko is mainland Australia's highest mountain, at 2,228 metres above sea level. It is located on the Main Range of the Snowy Mountains in Kosciuszko National Park, part of the Australian Alps National Parks and Reserves, in New South Wales, Australia, and is located west of Crackenback and close to Jindabyne, near the border with Victoria. Mount Kosciuszko is ranked 35th by topographic isolation.