Sepulchre, crypt (4)
I believe the answer is:
tomb
This clue is a double definition.
'sepulchre' is the first definition.
(I've seen this before)
'crypt' is the second definition.
(I've seen this in another clue)
(Other definitions for tomb that I've seen before include "Crypt or grave" , "Place for the burial of a corpse" , "Burial site" , "grave situation" , "Place of burial, grave or vault" .)