Another trip report if anyone’s interested - this one is a little random but a super interesting trip on Tasmania’s West Coast Wilderness Railway between the tiny remote towns of Strahan and Queenstown. What makes this trip interesting is the historic 1896 built steam locomotives that pull the train up at one point a 1:12 grade - the steepest ascent in the Southern Hemisphere - on an ABT rack and pinion system.
There is a “train” in the blue mountains that is essentially a cable car on rails - https://scenicworld.com.au/experience/scenic-railway that has 52 degree incline, but I don’t think that quite counts as a train!