Closeup map (5)
I believe the answer is:
inset
'closeup map' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for inset that I've seen before include "Diagram within another" , "Placed inside" , "Small picture placed within a larger one" , "Picture placed within another" , "Stein (anag)" .)