"The Lion, the Witch and the Wardrobe" realm (6)

I believe the answer is:

narnia

(Other definitions for narnia that I've seen before include "C. S. Lewis imaginary country" , "CS Lewis's fictional realm" , "Land behind wardrobe (C S Lewis)" , "Imaginary land of C.S. Lewis" , "C.S. Lewis country" .)

I've seen this clue in the LA Times.

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