Listening to the barking and roaring outside, Sun Tao said anxiously: "No matter who built it, let's leave here first."

Zhou Kesheng nodded and said, "No, let's leave here first."

Sun Tao said: "Which direction should I choose?"

Everyone entered through the exploded gap, and there were dark passages on both sides that could not see the end. No one knew where the passages on both sides led. Which side to choose to leave became a problem in front of everyone.

Zhou Kesheng took out the compass, looked at the direction above, pondered slightly, pointed to one of the directions, and said, "This passage is eastward, we choose this one."

Xiao Ling understood Zhou Kesheng's intention to choose the direction. This trip they entered the sea was following the direction from west to east. Now the passage faces east and west. Choosing an eastward channel is equivalent to continuing to move forward, and facing west is equivalent to the direction of the return journey.

Zhou Kesheng put away his compass, and no one said anything. Sun Tao took the searchlight and took three or four team members and immediately walked forward in the direction indicated by Zhou Kesheng.

Qin Yang led a few team members and waited for everyone to leave, then looked at the group of barks that were slowly gathering outside the gap, and then led the team members to catch up with the team.

At first, everyone was worried that the group of barkings would chase after them through the gap. They didn't expect that after walking along the giant passage eastward for about one or two kilometers, they could no longer hear the barking sound of barkings. They seemed to give up chasing.

After confirming that the bark did not catch up, everyone felt relieved. Zhou Kesheng asked Sun Tao and others who were leading the way to slow down, changing from the original speed to slow down.

The lighthouse ghost jellyfish parasitics caused everyone to lose their energy energy. They had just rested for a while before, but were attacked by barking. They fled all the way here. Everyone was exhausted. There was no end to this passage, and no one knew how long it was. Zhou Kesheng saw that everyone was exhausted, and many people could no longer hold on, so he could only stop and rest for a while.

Everyone sat down to rest. Sun Tao, Qin Yang and others were on guard with guns on both sides to prevent another beast from suddenly appearing.

"Xiao Ling, thanks to you just now." Sun Tao looked at Xiao Ling, with a hint of shame on his face.

He was on duty with Xiao Ling before, but he didn't expect to fall asleep. If Xiao Ling hadn't had great skills and was suddenly attacked by a bark, he could have killed the bark and replaced him with another one, the situation would have been different. Now, thinking about it, he had dereliction of duty.

Xiao Ling smiled and said, "Brother Sun, why are you polite? I am also a member of the team. This is what I should do."

Wang Lei said: "This sea area is very strange, like there is no distinction between day and night, and it does not exist on modern maps. The gods appeared before, and now this ancient alien species barking bark appears. It is not unusual. There are even other ancient alien beasts. What I am wondering about now is who built this tunnel? The ancients were afraid that they did not have such ability, but it seems unlikely to say that modern people... it seems."

This is also a difficult problem that confuses everyone, and everyone can't tell you the reason.

Li Zhibao nodded and said, "The material used to build this passage is also very strange. It is neither rock nor the building materials we are familiar with in modern times."

Among all, Hu Shengzhe took out the pieces of debris he had picked up before while resting. These were the wall materials scattered when Sun Tao used explosives to explode the wall. He picked up a few pieces. At this moment, he looked slowly with the light of the flashlight. Gradually, a very strange look appeared on his face.

"Old Li, Lao Wang, these are the fragments of the wall I picked up just now. Look at what material is this." Hu Shengzhe took a deep breath, as if he had thought of something, and handed the fragments in his hand to Li Zhibao and Wang Lei and others.

Wang Lei smiled and said, "Why, have you discovered some rare rocks again? You are a geologist. You are an expert. None of us can compare to you. You want to test us."

Hu Shengzhe shook his head, his face looked very ugly, and said, "This is not a rock or a building material. This is... a bone."

"Bone? What does it mean?" Wang Lei took a piece of fragment and looked at it. He couldn't see what material it was. He looked up in shock.

Hu Shengzhe took a deep breath and said, "I mean, these... are bone fragments."

He said as he stretched out his hands, gestured for a moment, and said, "It's very huge...a huge fragment of bones."

This sentence made everyone a little stunned. Sun Tao, Qin Yang and others all showed confusion, thinking that this tunnel was built with countless bones? How many bones do they need? Professor Hu was afraid that he would say such bizarre words.

Xiao Ling, Yu Tingting and others understood what Hu Shengzhe said, and a shocked look appeared on his face.

Xiao Ling couldn't help but interrogate: "Professor Hu, what do you mean is this a huge bone? These fragments are bone fragments, so are we... in a bone now?"

As soon as these words were spoken, everyone, including Sun Tao and Qin Yang, finally understood, and then they opened their mouths wide and showed an inexplicable look of shock.

Hu Shengzhe looked ugly and nodded slowly, "I have been studying it for a lifetime, and it will be impossible to make a mistake. These gray and white fragments are indeed fragments after the broken bones, and the density of these bones is very large, beyond imagination..."

He stood up as he spoke, stretched out his hand, knocked on the wall of the passage, and said, "Sun Tao just exploded the wall, but the fragments were bone fragments. There is only one explanation. The so-called gray-white wall we saw before was actually a bone that was beyond imagination. We exploded a gap in this bone and drilled into this bone. This so-called tunnel is neither a masterpiece of the ancients nor a modern building, but a... bone."

Everyone did not say anything, but instinctively took a deep breath.

After a while, Wang Lei murmured: "If this is really a bone... whose bone is it? What kind of creature can have such a huge bone? The road we walked here just now was one or two kilometers long. The length of this bone must be calculated at least in kilometers. Then the length of this creature..."

Thinking of this, everyone was shuddered. Hu Shengzhe was an expert in this field. He recognized that this fragment was a fragment of bone, so there would be no mistake. But if the passage where everyone is now is actually an internal space of a giant bone, it would also be unacceptable to everyone.

Only such a huge creature can have such a huge bone.
Chapter completed!