Alpine dancing from a mountainous country (6)
I believe the answer is:
nepali
'from a mountainous country' is the definition.
(Nepal is a mountainous country)
'alpine dancing' is the wordplay.
'dancing' indicates an anagram.
'alpine' with letters rearranged gives 'NEPALI'.
(Other definitions for nepali that I've seen before include "Language of Kathmandu" , "Mountain-dweller" , "Foreigner" , "Kathmandu native" , "one found in mountainous region" .)