South Georgia is an island group in the Atlantic Ocean and part of the British Overseas Territory of South Georgia and the South Sandwich Islands.
There were a number of whaling stations on the north east side of the island, several of which were served by rail systems. They were operational from the first decades of the 20th century until the 1960s. Some railway remains, said to include a derelict locomotive, can be seen.
NOTE: do not confuse with the South Georgia Railway, an shortline railroad in the USA which formerly operated in parts of the states of Georgia and Florida.
Uncredited photo image from the World Abandoned website