The crypt is in a vault at the base of the stairs. Inside the vault the floor is made of concrete and the walls and ceiling are a bisque-colored brick. One enters the crypt through a copper-clad door. When entering it is three steps down and then a short passageway into the hill and at the end of the passage is the brick-lined crypt. The crypt is approximately square. There are a series of slate coffins inserted into a double-set of shelves on the right and left. Various bones are said to be sorted by type into different coffins, presumably because individual bodies could not be identified and re-assembled for burial.