Well, I'm actually talking about fairly mundane stuff like the outback being wet and full of lakes, or the shoreline being near the present-day location of the Great Barrier reef.
I actually had a whole book (Legends of the Earth: Their Geologic Origins, by Dorothy Vitaliano) about geology as expressed in myths; one unambiguous example is the myths of the Klamath people in present-day Oregon which very clearly describe the collapse of ancient Mt. Mazama into the present-day Crater Lake.
Some sources for Australian stuff:
https://www.scientificamerican.com/article/ancient-sea-rise-tale-told-accurately-for-10-000-years/
Ancient Sea Rise Tale Told Accurately for 10,000 Years
Aboriginal stories of lost islands match up with underwater finds in Australia
https://www.nationalgeographic.com.au/australia/7000-year-old-indigenous-story-proved-true.aspx
7,000 YEAR OLD INDIGENOUS STORY PROVED TRUE
The story has been passed down for 230 generations