South American scrambled up ravine (8)
I believe the answer is:
peruvian
'south american' is the definition.
(I know that Peruvian is a type of south american)
'scrambled up ravine' is the wordplay.
'scrambled' indicates anagramming the letters.
'up'+'ravine'='upravine'
'upravine' with letters rearranged gives 'PERUVIAN'.
(Other definitions for peruvian that I've seen before include "of South America" , "Of someone from Lima, say" , "Eg, native of Lima" , "Paddington's nationality" , "Certain South American" .)