^ Considering it came from the same lot who made Resident Evil, I bet there are none, or maybe just one, in a room with some more fire outside of it, at the bottom of a hard to find pit.
Temen-Ni-Gru is also a fortress, isn't it? Guarded by big demon guardians, and entry is forbidden to the "powerless", according to Cerberus. So whoever the evil worshippers were who constructed it, they seemed to intend for it to be an imposing monument to strike fear into people, and to be a castle of sorts, and a city, and a gate to the demon world. Everything they needed all in one place to rule the world with?