Crater Lake locale (6)
I believe the answer is:
oregon
'crater lake locale' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oregon that I've seen before include "area of the US" , "State of north-west US" , "Salem's state" , "US north-western coastal state" , "No gore spilled in this American state" .)