![WCSA - On This Day - July 31, 2018 - The first narrow-gauge mainline railway in the world opens at Grandchester, Queensland, Australia in 1865 - WCSA.WORLD WCSA - On This Day - July 31, 2018 - The first narrow-gauge mainline railway in the world opens at Grandchester, Queensland, Australia in 1865 - WCSA.WORLD](https://wcsa.world/Userfiles/Upload/images/QR_heritage_loco_A10_no__6_on_the_Main_Line_to_Toowoomba__1990%20(1).jpg)
WCSA - On This Day - July 31, 2018 - The first narrow-gauge mainline railway in the world opens at Grandchester, Queensland, Australia in 1865 - WCSA.WORLD
![File:South Australian Railways narrow gauge locomotive T232 on broad gauge crocodile car.jpg - Wikimedia Commons File:South Australian Railways narrow gauge locomotive T232 on broad gauge crocodile car.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/c/ce/South_Australian_Railways_narrow_gauge_locomotive_T232_on_broad_gauge_crocodile_car.jpg)
File:South Australian Railways narrow gauge locomotive T232 on broad gauge crocodile car.jpg - Wikimedia Commons
![Maps showing the development of the South Australian railway network... | Download Scientific Diagram Maps showing the development of the South Australian railway network... | Download Scientific Diagram](https://www.researchgate.net/profile/Nicholas-Sheard/publication/339675771/figure/fig1/AS:865233954418690@1583299258601/Maps-showing-the-development-of-the-South-Australian-railway-network-from-1900-to-2000_Q320.jpg)