Crossword Genius

Nothing unaltered in desert haven (5)

Ross

I believe the answer is:

oasis

'desert haven' is the definition.
(I've seen this before)

'nothing unaltered' is the wordplay.
'nothing' becomes 'o' (looks like zero - 0).
'unaltered' becomes 'asis' (ie something left 'as is').
'o'+'asis'='OASIS'

'in' acts as a link.

(Other definitions for oasis that I've seen before include "Florist's foam" , "Area of calm amid hectic surroundings" , "place of relief" , "Pop group" , "Safe haven" .)

I've seen this clue in The Times and The Sun.
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