Warrangina

Approximately 35,000 years ago, the Aboriginals of the Kimberley area were visited by aliens. The aliens, called the Wandjina by the local tribes, where thought to be creator gods. The Wandjina scouts discovered that the Kimberley Region was rich in a rare element called ultranium, which they used to power their technology.
Recruiting the Kimberley tribes as a workforce, the Wandjina used them as miners, servants, assistants, and, in some cases, lovers. Abruptly, the Wandjina abandoned Earth and their settlement, leaving behind some of their advanced technology. Forced to fend for themselves, their Aboriginal servants used Wandjina technology to found the city of Warrangina.
Located deep in the Kimberley Ranges in Western Australia, Warrangina is a combination of futuristic technology and ancient traditions, towering buildings and grass humpies. The hereditary leader of Warrangina is a young man named Namatjiri Yingari, the “Sky Brother.” His word is law, though he relies on the wisdom of a council of tribal elders to help him make sound decisions that abide with tradition and expectation.
Warrangina was unknown to the outside world until the advent of World War II, when an expedition was sent by Hitler to investigate rumors of the advanced city. The Nazi’s were repelled by the Sky Brother of the day. The Sky Elder went on to assist the Australian government during the war, having been dubbed “Wandjina” by the press, and retired to Warrangina at the conclusion of the war. Relations between Warrangina and the rest of Australia remained distant until the early 1990s, when the current Wandjina joined Australia’s premier superhero team, The Southern Stars.
Warrangina is a world leader in innovation, sharing a limited amount of its advanced technology with Australia, though the government would like to have access to much more. The city’s main export is ultranium, which is provided to only a few countries as an energy source.
While Warrangina is considered a separate and sovereign nation, Wandjina tries to work closely with the Australian government to ensure that their relationship remains friendly.