‘Australia’s volcanic history is a lot more recent than you think‘, The Conversation, 25 May 2016
The most recent volcanic activity in Australia was around 5000 years ago. More than 400 volcanoes have been identified in south-eastern Australia. Mount Gambier is a good example.
Will it [the next eruption] happen any time soon? Well, the Newer Volcanics Province [south-eastern Australia] has been active for more than 4.5 million years, with eruptions occurring at least once every 10,000 years.
It could happen in our lifetime, but more likely it will happen after that.