Seeing that it was only about two meters away from the ground, Zhou Xu got rid of the rope and jumped down all of a sudden. This behavior was actually very risky, but at a distance of only two meters, it was clear that the ground was full of solid rocks.

This is a cooled lava lake, and now it presents a world of overall gray; occasionally a little reflection, which is some crystals in the rocks; and some metallic elemental colors. In short, in this oxygen-free environment, a large amount of metal exists in the form of elemental elements. The cooling after high temperature makes some metal particles black and shiny on the surface.

Using an infrared thermometer, the temperature here is only about ten degrees below zero. Obviously, this is a completely cooled planet. Unlike the earth, the deeper it goes! Some metal crystals isolated due to cooling and shrinkage can be seen in some rocks. After a few slaps, a few irregular iron beads were found.

It is indeed a treasure! Zhou Xu nodded secretly, thinking that it would be a great deal for the boss to hire these geologists to investigate the interior of the moon and find metal minerals. If he could really find a large number of metal elements calculated in the depths of the moon, it would have a huge boost to the space construction of the expert company. At that time, just metal smelting can save the expert company at least tens of trillions of yuan in investment and about three years!

Especially in terms of time, in this ever-changing world, time is also a more precious resource than money! Especially, there is no saying that this thing is going back to the past, and it is gone! Some people may say that going back to the past, but in the existing scientific theories, it is impossible for humans to truly return to the past!

Take an example of a paradox: if a person can travel back and kill himself who was assembling a pistol a few minutes ago; then the assembly of the pistol failed - so how did the person's future pistol come about? This is a scientific paradox; and in science, such means are often used to verify the rationality of certain things.

After looking around, I found that there was already a vertical, solidified crater, about ten meters in square radius. There were some holes around, the largest one was three meters high.

"There is a completely solid rocky ground below, and you can get down!"

"Okay, please pay attention."

Following the rope, everyone came down one after another. 50 people, plus a large amount of supplies, gathered in this crater that was only ten meters square, and it was a little crowded.

Zhang Chen is doing the detection; the composition of the surrounding matter is one aspect, and more importantly, in the surrounding pores of all sizes, find a channel to the next level of target.

It does not mean that the larger the cave, the better; some caves are dead, while some cave entrances are narrow but the inside will be very spacious.

"This!" After searching for a long time, Zhang Chen locked a cave, but the outermost layer was only one meter in size and two meters in size. If you want to climb in through such a hole, it is not easy to work. The best way to find such a cave is to judge echo. Fortunately, there is gas in this cave that can spread sound.

"I'll do it first!" Li Yun, a young employee of a master company, volunteered. He put down the unrelated items and only carried necessary supplies, such as compressed air tanks, lighting equipment, pistols and daggers, and slowly crawled in.

"Be careful, pay attention to the surrounding rock walls, there are many sharp crystals, and don't cut the space suit." Zhou Xu told me worriedly. Here. Once the space suit is damaged, although there will be no life-threatening danger in a short period of time, the rescue work is not easy to carry out. The next batch of supplies will not be delivered in one day.

"Don't worry, captain, I have prepared the tools!" Li Yun raised the rock in his hand; yes, this is Li Yun's tool. Of course, he also carried exquisite tools, such as hammers, chisels, etc.; they were all made of materials specially made by master companies and were extremely strong. Use the rocks in his hand to smash some sharp rock crystals around him; this process is very slow, and you have to go forward and find crystal particles and eliminate them.

It took more than an hour before Li Yun's voice came from the headset: "It's very safe inside, come in. The temperature inside has a slight upward trend, minus 12°. It feels like there should be a heat source inside the moon, not completely cooling."

Zhang Chen: "This is for sure. According to calculations and observations, there should be a core inside the moon, with a temperature of about 1,000 degrees, which is the residue of ancient temperature. It is not even ruled out that there is still lava inside the moon. It is better to be careful."

Li Yun: "Don't worry, there is no danger here! It's very spacious. The terrain in front seems to have dropped again."

Entering the cave again, the detector began to ring.

"Radiation exceeds the safety radiation of the human body, please pay attention; if it exceeds the safety radiation of the human body, we must withdraw." Zhang Chen was a little nervous. Although he had considered this issue before, he did not expect that when he arrived here, the radiation began to exceed the standard. It was less than 500 meters underground.

"Teacher, I just determined that the iron content of the rocks here is as high as 33%, and the overall metal content is as high as 42%. And most of them exist in the form of elemental substances, which has already achieved development value."

"Well. It seems that the moon is really a rich mine. We keep moving forward and strictly monitor radiation."

When we reached the end of the cave, we began to put down the second rope. We dropped by about 60 meters and came to a cave again, but compared to the cave in front, it was a bit magnificent here!

A large number of rocks may have formed a branch-like structure because of the rapid cooling rate. In this way, branches and branches run across this underground world that cannot be seen at a glance. Everyone can only stand carefully at the fork of the "branch" and try to choose a relatively wide branch.

"Didi, the radiation reaches 4 times, and long-term contact will cause permanent damage to the human body. It is recommended to evacuate immediately!" Such reports have made some old experts a little worried.

"Wait a minute, let's measure the elements here.

At three o'clock, iron atoms have a content of 47%, copper atoms have 6%, oxygen element 10%, silicon element 4.3%...

At seven o'clock, iron atoms are 32%, 17%, silver is 3%, titanium is 12%...

...

Comprehensive evaluation, the iron element here contains about 38.76%. If the ore is crushed and magnetic separation method can be used to quickly screen the iron powder." Finally, Zhang Chen summarized, "Zhou Xu, I think we have reached the preliminary intention of finding iron ore. Next, it depends on your company. Unless we investigate the equipment upgrade next time, we will not be able to put in much effort."

"It's already very good. I didn't expect that there was such a place not far from the base, not deep underground. I just don't know if the entire moon is like this or somewhere else."

"I think this should be a common phenomenon on the moon." Zhang Chen looked at the surrounding environment. The dark rocky jungle made people feel gloomy. It was too big and empty, and the only lighting could not bring enough brightness to the place.

"Well, let's go back to the ground first. The elderly are limited, young men, let's take a mat!"

It is not easy to walk back. Along the way, you have to climb three rock walls, which is a huge test for the elderly; although many heavy objects are already burdened by young people.

Back at the ground, Zhou Xu launched the discovery here into Zhang Jingyuan. To be precise, it was sent to the space shuttle in space and forwarded to Zhang Jingyuan.
Chapter completed!