The SteamRanger Heritage Railway is a 77 kilometres (48 miles) long 1600 mm (5 ft 3 in) broad gauge tourist railway, formerly the Victor Harbor railway line of the South Australian Railways (SAR). It is operated by the not-for-profit South Australian Division of the Australian Railway Historical Society. As the last operating non-suburban line of the former broad-gauge network, on which Australia's first public railway was opened, the line and its associated rail assets have high historical significance.