Return journeys to the Australian bush? (7)

I believe the answer is:

outback

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'bush?' is the definition.
(I know that Outback is a type of bush)

I cannot understand how the rest of the clue works.

(Other definitions for outback that I've seen before include "Arid interior" , "Remote Australian area" , "Remote areas of Australia" , "somewhere remote" , "Aussie interior" .)

I've seen this clue in The Globe and Mail.

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