Indians broke Australian isolation 4,000 years ago

Research finds they brought dingo's ancestors with them

Ancient Indians migrated to Australia and mixed with Aborigines 4,000 years ago, bringing the dingo's ancestor with them, according to new research that re-evaluates the continent's long isolation before European settlement.

Australia was thought to have been cut off from other populations until Europeans landed at the end of the 1700s, but the latest genetic and archaeological evidence throws that theory out.