Sanatana Dharma spread far and wide throughout the world.
Middle east,Europe, Africa,Latin America, Americas,England, Sweden,Arctic,Russia,Iran, Burma,Indonesia, Japan,Vietnam,Laos, Cambodia,Fiji,Polynesian Islands, New Zealand and Australia.

A group led by Shiva and Ganesha left from the South of India and traveled to Arctic through the middle east, Europe, Africa,Americas,before returning to Sarasvati valley through Russia and Iran.
Earlier to this event , the Sanatna Dharma was in the Super Continent of Gondwana and spread easily to Australia.
There is also a reference that Australia might have been the repository for weapons, Astra Alaya.
The wild native tribes of Australia, dance with a ‘Third Eye” painted on their forehead called the ‘Siva Dance’. (Spencer and Gillen, “The Natives tribes of Central Australia, Figures 128-129, page 21.)
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Astra in Sanskrit means weapons, arrows, Aalaya means home,
Australia might mean home of weapons.
Atomic weapons were used in Mahabharata battle.
Read my articles on this.
Citation.
http://rajavedapatasala.org/FAQ2.html
https://ramanisblog.in/2015/01/16/australia-home-of-weapons-ramayana/





There is no way Australia could have meant Astra Aalaya. “Australia” comes from “Terra Australis”, a latin phrase. ‘Australis’ means ‘southern’. ‘Terra australis’ means ‘Southern Continent’. Please refer to the entry in this link: http://www.etymonline.com/index.php?term=australia
One can not be too sure about either. Considering the Australian links to Sanatana Dharma andcTamils of Lemuria, the presence of Sanatana Dharma customs indicate Hindu presence.But Indian history is so manipulated that many tend not even give a passing thought to the wealth of Archelogical finds linking Sanatana Dharma to various countries My search shall continue .Regds