Colorado River creation (5,6)

I believe the answer is:

grand canyon

'colorado river creation' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for grand canyon that I've seen before include "Colorado River gorge" , "American gorge" , "Arizona tourist attraction" , "Major feature in Arizona" , "nickname of US State" .)

I've seen this clue in the Newsday.

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