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