Bury in hinterlands (5)
I believe the answer is:
inter
'bury' is the definition.
(to inter is to put into the ground)
'in hinterlands' is the wordplay.
'in' indicates a hidden word.
'INTER' is hidden in the letters of 'hinterlands'.
(Other definitions for inter that I've seen before include "get put down!" , "Place in ground" , "Nitre (anag.)" , "Set deep" , "Milan football team" .)