As the tunnel narrowed, the two of them felt more and more suffocated. Just then, everything before Jacob emptied into a relatively large space. He could not help heaving a sigh of relief as he subconsciously swam upwards.
However, it didn't take long before he came into contact with the stone wall above. It turned out that that place was not an exit but a wider part of the tunnel.
The two of them could move side by side. They were in the depths of the cave, and it was darkening. The searchlights above them could only illuminate a small area. To prevent accidents, they moved forward alongside each other.
At that moment, a black shadow drifted towards them. Under the light, they could clearly make out that it was a human skeleton. It might have been there for a long time, so the
