Colorado skiing mecca (5)

I think it could be either:

Which length description are you looking for?:

aspen

'colorado skiing mecca' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for aspen that I've seen before include "Trembling poplar tree" , "Colorado ski resort - tree" , "A poplar with shivering leaves" , "Tree with shivering leaves" , "Type of poplar" .)

I've seen this clue in the LA Times.

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