The flag was protected by the owners of the Nullarbor General Store, who, upon founding the micronation known as the Republic of Nullarbor, recreated it and added a later symbolism for it:
- Grey represents the cloudy sky before rain.
- Green represents the green land after rain.
The grey and green colour scheme is also used by the Principality of the Nullarbor, though that flag doesn't have any official symbolism.
The Legitimate Nullarbor Territory uses a flag derived from the general shape of Australian territory flags, with a coat of arms representing the Sturt's Desert Pea, with a Tudor Crown representing loyalty to the British monarchy.