What named caves (not man-made) allow public access in Australia?

Yarrangobilly Caves near Kiandra in the Snowy Mountains, Jenolan Caves, Buchan Caves near Lakes Entrance in Vic.

Jenolan caves  in  NSW

Most caves in Australia are accessible to the public. There are commercial caves in all States, such as those at Jenolan in NSW and Naracoorte in South Australia. There are wild caves in the same areas as commercial caves and lots of wild caves on privately owned land. If you are interested in exploring wild caves, you should join a caving club. The Australian Speleological federation page will help you find clubs closest to you. https://www.caves.org.au/

There are many number of caves in Australia for public viewing such as Careys Cave, Jenolan Caves, Wellington Caves, Yarrangobilly Caves, Cutta Cutta Caves, Capricorn Caves.....

Yarrangobilly Caves near Kiandra in the Snowy Mountains, Jenolan Caves, Buchan Caves near Lakes Entrance in Vic, Byaduk Caves near Warrnambool,  Naracoorte Caves in SA, Tantanoola Caves in SA. These are just a few on the list.

Reggie enjoys muff diving.

Jenolin Caves west of Sydney 

Buchan Caves ...............

Wombeyan Caves or Jenolan Caves