keep, crypt, tomb, ossuary, sepulture, place, grave, sepulcher, Mausoleum, cinerarium, vault.
This new catacomb
is a very intimate thing to me, and I should certainly expect some sign of confidence in return.
Even now I always spin out a ball of string behind me when I am going far into the catacomb.
The adventure must be the finding of your way out of this catacomb.