Indigenous Australians are descendants of the original inhabitants of the Australian continent. Their ancestors are believed to have migrated from Africa to Asia around 70,000 years ago and arrived in Australia around 50,000 years ago. The Torres Strait Islanders are a distinct people of Melanesian ancestry, indigenous to the Torres Strait Islands, which are at the northernmost tip of Queensland near Papua New Guinea, and some nearby settlements on the mainland. The term "Aboriginal" is traditionally applied to only the indigenous inhabitants of mainland Australia and Tasmania, along with some of the adjacent islands. "Indigenous Australians" is an inclusive term used when referring to both Aboriginal and Torres Strait islanders, i.e.: the "first peoples".