>>16104049I like the idea of a large Limestone complex that could have you pop up in seemingly unrelated cities (connection between the mt gambier station and sydney for example)
Speaking of mt gambier, the blue lake there being one of very few volcanoes in australia could very well make a nice exploring cave that you access with dive. Like the seafloor cave from hoenn.
Also I drew what an entrance to one of these limestone caves may look like.
