Where Shoshone Falls falls (5)
I believe the answer is:
idaho
'where shoshone falls falls' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for idaho that I've seen before include "found in America" , "State of north-west USA" , "O, I had a change in this state" , "Northern US state" , "somewhere in the US" .)