A little history
A 1,600 mm (5 ft 3 in) railway was opened to Adelaide and Melbourne in 1886. Some years later the Millicent - Mount Gambier 1,067 mm (3 ft 6 in) narrow gauge railway was extended to Wolseley, creating a break-of-gauge rail junction. In the 1950s the break-of-gauge was abolished by the conversion of the Mount Gambier line to Irish gauge. The line to Mount Gambier has been out of use since the conversion of the Adelaide-Melbourne line to 1,435 mm (4 ft 8 1⁄2 in) standard gauge in 1995, pending possible conversion to standard gauge.
Early in World War II, No. 12 Inland Aircraft Fuel Depot was established at Wolseley, with an initial capacity of 280,000 imperial gallons (1,270,000 litres; 336,000 US gallons) in three tanks camouflaged to look like farm buildings. The depot started operations in 1942 and three additional tanks were added later. It was disbanded on 14 June 1944
The cache is a magnetic in the obvious location
Enjoy