National Park in California (8)
I believe the answer is:
yosemite
'national park in california' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for yosemite that I've seen before include "Where there are watery cascades" , "Area of beauty" , "California falls, valley, park" , "Natl. Park in California" , "Californian national park" .)