Fabled island, not island with a city, abroad (7)

I believe the answer is:

atlanta

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But I can't explain it at all! Could you help me understand?

(Other definitions for atlanta that I've seen before include "Olympic games city, 1996" , "Georgian capital" , "American city" , "Maiden desperate to marry abandons a" , "Georgian location" .)

I've seen this clue in The Times.

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