Sundance Film Festival state (4)
I believe the answer is:
utah
'sundance film festival state' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for utah that I've seen before include "State of the union" , "US state settled by the Mormons" , "The American Mormon state" , "State, Mormon settlement" , "Brigham Young's state" .)