Yin trace

Chen Ziyun smiled wryly.In his impression, the ancient people who used to exist on the plateau didn't have the strength to build these caves at all.Don't look at these dark caves, they don't look very eye-catching.But in fact, digging so many caves on the cliff is no less difficult than the ancient Egyptians who built the Khufu Pyramid thousands of years ago.

Chen Ziyun pondered for a while before saying: "The construction year of these caves is unknown, so it is difficult to draw conclusions. But it can be said that even now, it is very difficult to dig caves here." After a pause, Chen Ziyun continued: " We can go into the caves and see what features are in these caves, and perhaps from these features, we can find information related to them." Chen Ziyun's voice was full of expectation.

Liu Canghai nodded.He expressed his understanding of Chen Ziyun's words.

Chen Ziyun suddenly asked: "Brother Liu, can you tell me about the geological conditions in this area? I want to be very detailed."

Liu Canghai nodded and said, "It's natural. The place we are now is part of the ancient Congling Mountains in the eastern extension of the Karakoram Mountains. The average altitude is over 6000 meters. It belongs to the Yanshan fold system, formed with the South Asian subcontinent and It is related to the collision of the Eurasian continent; the tectonics of the earth started from the Cretaceous and has continued to change until now..."

When it came to professional issues, Liu Canghai talked eloquently, and various professional words burst out of his mouth frequently. Among the people around him, only Chen Ziyun could understand what he said.From Liu Canghai's narration, Chen Ziyun has a deeper understanding of this snow mountain.After Liu Canghai finished all this, the team members who had gone to install the climbing ropes also came down.They have fixed climbing ropes on the mountain wall and connected them to the sides of several caves.

Ye Ya is very satisfied with the work efficiency of the 042 team members.After watching the climbing ropes being connected, she said: "The cave above is not the main purpose of our trip. Just go up and see what's there. You don't need too many people. I think five people are enough."

Chen Sha attaches great importance to Ye Ya's proposal.He pondered: "That's right, let's see if these caves are worth exploring before discussing. Record the location here, and organize large-scale exploration when there is an opportunity in the future."

The words of the two have come to a conclusion.Others can't say anything.

Shen Sha wanted to lead the team himself, but was persuaded by Xie Feng.Although Chen Sha's metal arm is very powerful, but the reaction is still not as good as a normal person's arm, so Xie Feng replaced him.Ye Ya also expressed that she would take Baldy with her and go up together.This occupies three places.Chen Ziyun naturally had to go, and Liu Canghai said that he also wanted to go to the remaining one, and he had a good reason. He was a geologist, and with him around, he might be able to provide some professional knowledge.However, Liu Canghai's combat power was not that strong, if there was danger in the cave, it might not be able to protect him.Shen Sha decided to add one more person, calling Zhou Nan to join the exploration team. Ye Ya did not object to this proposal.

In order to prevent possible dangers, several people were fully armed and looked like they were facing a big enemy.After checking the climbing tools, Ye Ya took the lead to grab the climbing rope and climbed up.Judging from Ye Ya's movements, she must be an expert rock climber. It took her less than 5 minutes to climb the tens of meters high mountain wall, which left everyone dumbfounded for a while.

Ye Ya crawled to the mouth of a cave, and did not enter recklessly, but took out a handful of fluorescent sticks, shook it, and threw it into the cave.In this cold place on the plateau, the light emitted by the fluorescent sticks is more dazzling than usual.

Taking advantage of the light from the fluorescent stick, Ye Ya saw clearly the scene inside the cave, and then slowly took out the flashlight, opened it inside, and people got in too.

Following behind is Chen Ziyun.He has always been wary of Ye Ya, and he didn't want Ye Ya to go inside first.It is not known whether there is any danger inside, but after Ye Ya enters, even if there is no danger, there may be danger.

To Chen Ziyun's surprise, after Ye Ya got into the cave, he didn't go deep, but stayed at the entrance of the cave and waited for everyone.At first Chen Ziyun thought it was because of the limited depth of the cave, but after he climbed up the cave, he realized that his idea was wrong.

The cave is huge!But looking up from the ground, I had no idea that the space inside the cave would be so amazing.The cave is like a small gourd mouth, and the spaciousness inside is unimaginable, as if the entire mountain wall has been hollowed out.At a glance, a space of more than [-] square meters was exposed in front of Chen Ziyun.And such a large space is nothing at all, because at the end of the space, the stairs cut directly from the stone wall wind up, and at the end of the stairs, there is another dark hole, indicating that there is another layer above!And this is only what the naked eye can see. Whether there are more upward stairs above is really uncertain.But judging from the height of the holes seen on the ground, this possibility is extremely high, and even the number of layers is a scary number.It is speculated that the seemingly densely packed holes on the mountain wall may actually be more appropriate to say that they are the windows of the entire cave!

"..." Chen Ziyun opened his mouth, wanting to say something, but after opening his mouth, he realized how lacking his vocabulary was, he couldn't find any adjectives to describe this cave in his mind!

"It's spectacular, isn't it?" Ye Ya looked at the moved Chen Ziyun, his face was as calm as ever.Shining a flashlight on the front, she said with a little disappointment: "It's empty here, there's nothing there." As she spoke, she walked a few steps forward, walking from the corridor of the cave to the belly of the cave.Chen Ziyun followed closely behind, but did not speak, his eyes kept looking around.

The cave is not empty, there are still many stone pillars inside.It can be seen that these stone pillars existed as one with the mountain wall at the beginning.The people who excavated this cave at the beginning left these stone pillars to support the space of the entire cave.

Chen Ziyun has studied architecture, so he can tell at a glance that the areas where stone pillars are left are all mechanical support points.Every stone pillar played its due role.It can be seen from this that the people who built this cave had an extremely rich understanding of architectural mechanics.

Chen Ziyun thought for a while, took off the searchlight hanging on the back of the backpack, turned it on, and took a look at the dome of the cave. The light shone around, and the whole cave was much brighter.But the efficacy of a searchlight is obviously not enough.Ye Ya also quickly turned on the searchlight in her hand and shone in another direction.In the adjacent area, the light appears brighter.But still not enough to cover all areas of the cave.

Xie Feng also climbed up from below at this time, and after being taken aback by the size of the cave, he said nervously: "This place is too big, you must pay attention to whether there is any danger hidden!"

Chen Ziyun nodded.Said: "Everyone, be careful. There are usually vampire bats and other animals in caves. Don't disturb such existences!" When speaking, Chen Ziyun kept his voice low to avoid echoes, but he suddenly realized that , Xie Feng's voice was not low all the time, but it seemed that there was no echo.

At this time, Ye Ya's expression was very strange.Confusion appeared on her face, she lowered her head in thought for a moment, but shook her head, looked up at the rock dome above her head, her face was gloomy.

"What are you doing?" Chen Ziyun suddenly noticed that after Ye Ya came in, he was staring at something without saying a word.Following Ye Ya's gaze, Chen Ziyun looked up at Yan Qiong.The average height from the ground to the dome is more than four meters, and in the middle area, the distance from Chen Ziyun's visual measurement is at least more than ten meters.So in poor light conditions, if he wanted to see clearly the top of the dome, with his eyesight, it was impossible to see clearly what was on it.Chen Ziyun curiously picked up the binoculars, adjusted the focus, and borrowed the function of the binoculars to see why Ye Ya was so engrossed.

Ye Ya raised an index finger, put it to her lips and said, "Don't disturb me!"