Like Machu Picchu (5)
I believe the answer is:
incan
'like machu picchu' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for incan that I've seen before include "like former S American civilisation" , "See old South American" , "Former tribesman" , "doing time?" , "Imperialist of the past" .)