Drunken larks in a far country (3,5)
I believe the answer is:
sri lanka
'far country' is the definition.
'drunken larks in a' is the wordplay.
'drunken' indicates an anagram.
'larks'+'in'='larksin'
'larksin' is an anagram of 'srilank'.
'srilank'+'a'='SRI LANKA'
(Other definitions for sri lanka that I've seen before include "Asian country, capital Colombo" , "Island country in the Indian Ocean" , "Former Ceylon" , "Country off the southeast coast of India" , ""The teardrop of India"" .)