Heyerdahl raft (3,4)
I believe the answer is:
kon tiki
'heyerdahl raft' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for kon tiki that I've seen before include "Thor's craft" , "Thor Heyerdahl's vessel of exploration" , "Raft used by Norwegian explorer, Thor Heyerdahl" , "Famous raft" , "transport for Thor?" .)