The group continued to walk in for half an hour, each of them vigilantly moving around and moving softly. Ｘ

It's a black hole, silent, and there doesn't seem to be anything, except for a few strange fungi and geothermal plants that grow tenaciously, but in density much smaller than the caves in B11.

If, after hundreds or thousands of years, the last bit of geothermal heat disappears, they will wither and die with it.

Even...... There are very few traces of animals, and occasionally only a few strange-looking animals come out, which should be the "monsters" in the lizard's mouth.

They appear to be aggressive, but they are all malnourished, strong and hard-working, and pose no threat to humans.

"At the moment we are about 120 meters from the surface and the ambient temperature is 4 degrees Celsius. The amount of nuclear radiation here has exceeded the dose that ordinary people can bear, and staying in such a place for a period of time can easily get radiation sickness. ”

A scientist examined the detection equipment and said solemnly, "I think that perhaps the monster that the indigenous lizard is talking about is a mutated species that has been exposed to nuclear radiation." ”

"The curse they call is probably nuclear radiation. That's why there is disease, or infertility......"

Yu Yifeng couldn't help but nodded.

Aboriginal people usually classify what they don't understand as gods, gods, ghosts, and ghosts, but humans don't. Humans have always been able to find out the truth about these phenomena.

It seems that this is the truth......

But where does such high levels of nuclear radiation come from?

Could it be that there was a nuclear war here? There used to be a high-level civilization here, or ...... Was this once an interstellar battlefield?

Various thoughts came to Yu Yifeng's mind, and everything seemed so confusing.

"Captain, look here!"

At this moment, Zhao Yao's eyes lit up behind him.

He cautiously stepped forward, dug out a rusty iron rod from the soil pit, and slowly handed it to Yu Yifeng.

Yu Yifeng frowned and took the iron rod and looked at it carefully.

This iron rod...... It's a bit like the steel bars in the house! Yes, it's nothing else, it's just an ordinary steel bar, and it is impossible for nature to have such a thing.

However, it was so rusty that it broke off directly after touching it, and the original situation was not visible at all.

Yu Yifeng was shocked, his heart beat wildly, and he couldn't help asking: "Can you detect the texture and age of the specific material?" ”

Another scientist took the iron rod, carefully identified it, and shook his head in embarrassment: "The rust is so strong that it basically blends in with the surrounding environment, and it is difficult to identify ......."

"But when you get back to the base, you have enough equipment to give it a try."

Everyone was excited and agitated by the appearance of this iron rod, which meant that they had found the right place, there must be more to it here!

It is impossible for a rusty steel bar to appear for no reason......

Yu Yifeng was silent and motioned for everyone to be quiet.

He crouched down and carefully examined the ground, which was all dirt and gravel, and there was nothing out of the ordinary.

He suddenly touched the wet soil with his hand, and an inexplicable intuition arose in his heart.

"Come on, let's dig it together!"

After hearing Yu Yifeng's call, more than a dozen people immediately squatted down, and without saying much, they dug directly to the ground.

The rest were armed with guns and were in charge of guarding the perimeter.

Power armor itself is a high-strength metal that has a certain excavation function. In addition, the soil is relatively soft and there are not too many stones, and the excavation speed is very fast, and the results are dug out after ten minutes.

A ...... House!

A half-collapsed reinforced concrete house! Reinforcement buried in the wall is faintly visible.

I don't know how many years it has been buried here, and the contents inside have long since rotted, but I can still make out the traces of the house......

Wall...... And scraps of furniture!

"No, it can't be a relic of an interstellar civilization! It's an ordinary house, an ordinary residential house...... There was once a civilization here! ”

A scientist spoke abruptly. There was a tremor in his mouth, not only excitement, but also a hint of fear, and a hint of fanaticism. This ambivalence and madness is simply indescribable.

"There were even cities here at one time! It's just the most ordinary house, yes, it must be just an ordinary house! ”

But what about civilization? What about cities?

Why did civilization disappear?

Could it be that those lizards are descendants of this unknown civilization? Why have they degraded to such an extent?

Impossible!

Will civilization regress?

Shocked in their hearts, they began to dig again. More bizarre stuff was dug up immediately afterward.

They dug down a meter or two and dug out something that resembled a concrete road. However, as time passed, there were ruins everywhere, and even blended in with the surrounding environment, and could only barely be recognized.

Below here, it used to be a road!

It really is an ordinary house on the side of the road

Too long, too long......

It has almost erased the traces of civilization for a long time!

Civilization, in the face of the eternal universe, is completely a drop in the ocean.

Yu Yifeng became more and more frightened, not only was he extremely excited, he felt that his heart was still pressed by something, and this contradictory feeling made him almost breathless.

“…… Look, look! One researcher dug up a rotten, shapeless lump of metal that made it impossible to tell what it was.

"It's ...... Circuit boards? This is a circuit board! Another man found a rock and screamed frantically. Of course, the circuit board could not have existed intact, it actually melted into the stone, became a fossil-like thing, and the circuit could be distinguished from the stone!

Yu Yifeng suddenly gasped.

Since we have circuit boards, we can be sure that this civilization has developed to the age of electricity, and even if the technology is worse than that of humans, it is not much worse.

Moreover, the personal computer of this unknown civilization may be quite widespread!

To know...... There is a high probability that this area they excavated is just an ordinary house! Yu Yifeng didn't believe that he was so lucky, and he dug directly to the core of the unknown civilization as soon as he dug it casually. You can dig up the tech place with just one dig.

"Can you determine the specific technology content?" Yu Yifeng took a closer look at the circuit board embedded in the stone.

"Not yet." Another scientific team leader regretfully said: "The damage is too serious, we have to take it back to the base and study it carefully." However, in terms of the scale of circuit integration, I am sure that it is more technological than the early 21st century...... A relic of an unknown civilization! ”

As he spoke, the expert seemed to think of something, turned red, and fell into a state of frenzy: "Even the simplest technology is good, at least it means complete!" The technology tree of our new human civilization is still developing too fast, and because the number of people is too small, there are a large number of faults......"

"Even some of the ordinary technology on Earth has been lost! Because it is impossible for our lunar database to include all the information on Earth! ”

"And the appearance of this underground civilization relic can make up for the lack of our ordinary technology...... No, maybe they're a little more technologically advanced than we are...... That way the better! ”

Based on the current discoveries, it is not possible to determine which of these unknown civilizations or the new human civilizations is stronger and which is weaker......

But according to all the signs in the past, they have completely fallen on the Knicks Star! r