Where does the poem overland mail take place?

The poem "Overland Mail" by Rudyard Kipling takes place in the Australian outback, specifically along the route of the Overland Mail coach service that operated between Melbourne and Adelaide in the late 19th century. The poem describes the journey of the mail coach as it travels through the vast and rugged landscapes of the Australian bush, encountering challenges such as extreme weather, rough terrain, and the threat of bushrangers (outlaws who robbed travelers).