American greeting English newspaper turning up in US National Park (8)
I believe the answer is:
yosemite
'us national park' is the definition.
(national park in California)
'american greeting english newspaper turning up' is the wordplay.
'american greeting' becomes 'yo' (greeting in US English).
'english' becomes 'E' (abbreviation).
'newspaper' becomes 'times' (The Times is an example).
'turning up' is a reversal indicator.
'e'+'times'='etimes'
'etimes' reversed gives 'semite'.
'yo'+'semite'='YOSEMITE'
'in' is the link.
(Other definitions for yosemite that I've seen before include "Where there are watery cascades" , "Californian national park" , "Natl. Park in California" , "US National Park in California" , "Area of beauty" .)