Australasia

Australasia was a continent on Earth. It consisted of Australia, Tasmania, New Zealand, Malaysia, and the islands of Melanesia, Micronesia and Polynesia which were collectively known as Oceania. (AUDIO: The Transit of Venus) In 200,100, when the Daleks attacked Earth, Australasia was referred to as "just... gone" after a bombing run, which implied absolute destruction of the continent. (TV: The Parting of the Ways)

At one point, Australasia was home to one of the five ioniser bases keeping back the glaciers of the second Ice Age. (TV: The Ice Warriors)