There was actually a large machine room behind this wall. This machine room was in fact a heavy-duty elevator equipment and operation room, and there was a large lifting cage below the machine room.

Noel led the crowd into the cage, activated the cage with his own iris, and the cage then brought the crowd to the depths of negative six hundred meters.

As the cage moved downward, Noel said to Charlie, “Mr. Wade, all the safety equipment here is one-way. The hidden door just now as well as the lifting cage can only be operated from outside. In addition, after the cage reaches the bottom, there is a door that can only be opened from the outside.”

Charlie asked him, “This should be the only access to the outside world from the dead soldiers’ living quarters, right?”

“That’s right.” Noel nodded and said, “The dead soldiers can only enter and exit through a passage, but there are a large number of steel ventilation pipes in their living quarters. However, the thickest internal diameter o