The passage to the fifth level was unexpectedly different from the sloping or spiralling tunnels of the previous levels. When Ike led them to the end of a tunnel, pointing out their route, everyone was filled with surprise. The place Ike referred to was an underground cavity he had mentioned before, similar to Earth's Scar, but it was not open-air. Looking up, all they could see was pitch-black rock.
The underground cavity was nearly circular, with a diameter of nearly two hundred meters. Looking out from the end of the tunnel, the tunnel's exit was on a cliff top, under which hung numerous moss-covered stalactites. The thick points of the stalactites hung downwards, giving one a feeling they could fall at any moment. And as for looking down, they could only see darkness. As if this black hole was a gateway to Hell, waiting for its victims with an open mouth.