HomePortfolioCulture We mapped the ‘super-highways’ the First, Indigenous Australians used to cross the ancient land We mapped the ‘super-highways’ the First, Indigenous Australians used to cross the ancient land The latest research advances our knowledge about the most likely routes those early Australians travelled across this giant continent. (Image: Adobe/dedoma) There are many hypotheses about where the Indigenous ancestors first settled in Australia tens of thousands of years ago, but evidence is scarce. Few archaeological sites date to these early times. Sea levels were much lower and Australia was connected to New Guinea and Tasmania in a land known as Sahul that was 30% bigger than Australia is today.