Outback

The Outback was a desert region of Australia.

One incarnation of the Doctor lived in the Outback for 123 years, where they "saw some great rocks." (TV: Spyfall)

In 1943, the Eleventh Doctor and Amy Pond encountered Sgt Brett Cooper in the Outback, and convinced a Mirrorite to return to its homeworld. (COMIC: Seeing Things)

In 1987, the Fifth Doctor visited Tegan Jovanka in the Outback, where she was running her father's farm after he was hospitalised by a snake bite. (PROSE: Encounter on Burnt Snake Flat)

The Great Victoria Desert was found in the Outback. The Thirteenth Doctor visited the desert during a Kasaavin invasion of Earth, where she encountered in the guise of O. (TV: Spyfall)

Behind the scenes
Scenes set in the Australian outback in Spyfall were actually shot on location in South Africa.