Adelaide–Darwin railway line

The Adelaide–Darwin rail corridor consists of the 2975-kilometre (1849-mile) long 1435 mm (4 ft 8+1⁄2 in) standard-gauge main line between the South Australian capital city of Adelaide and the Northern Territory capital of Darwin, and the lines immediately connected to it. Preceded by a number of other shorter railways, a transcontinental line through to Darwin was completed in 2004, when the final link from Alice Springs was opened.

Source: Wikipedia — Adelaide–Darwin railway line (CC BY-SA 4.0)