A bottomless black hole, the entrance of the hole is only a little larger than the mouth of an ordinary manhole, and Zhuang Hui's "exclamation" just now came from here. Pen % fun % Pavilion www.biquge.info

Shepherd Wind turns on a high-intensity tactical flashlight.

I shone down to the entrance of the cave.

The hole is very deep, and the tactical flashlight can shine for hundreds of meters, but this hole cannot see the bottom, or rather, the hole is not completely straight down, and there is a sound of drumming wind inside.

The hole is deep.

"Zhuang Hui, Zhuang Hui......" Mu Feng tried to shout a few times, but could barely hear any echo.

This woman can't really fall into it, right?

Although he didn't like this Zhuang Hui very much, she was Professor Zhuang's daughter after all, a member of the exploration team, and he had the obligation to protect the safety of his teammates.

Just as he was about to go down and take a look.

Suddenly, there was a sharp sound of wind in my ears.

Mu Feng copied it casually, and when he grabbed it, he saw that it was a stone.

Turning his head to see, which one is not Zhuang Hui?

"You're kidding me?" Mu Feng was really angry, he almost went down just now, this woman stood on it well, but she didn't answer him.

"I'm standing right behind you, but you can't see it." Zhuang Hui covered her mouth and smiled, obviously she didn't feel guilty at all for playing tricks on Mu Feng.

Just now, his mind was focused on observing this underground black hole, and he really ignored the observation of the surrounding environment, and did not notice Zhuang Hui appearing behind him.

However, Zhuang Hui is by no means an ordinary person, even if a stealth master like Leng Ying is close, he will find out, not to mention, Zhuang Hui is only seven or eight meters away from him.

Zhuang Hui is definitely an ancient martial arts master who does not lose to him.

From the previous elusiveness, as well as the speed and body style when he dragged himself to Monkey Mountain to retrieve treasure, it is not difficult to come to such a conclusion under the mutual verification.

A young and beautiful woman who has been adventuring outside all the year round, if she doesn't have the ability to protect herself, no one will believe her when she says it.

"You found this hole?"

"The Eagle Leader said yes." Zhuang Hui is like this, what can you do to me.

"I'll give you a great credit, you're guarding here, I'll go back and get a rope and explore this hole." Mu Feng commanded.

"Why do you want me to stay here while you go back and get the rope?"

"Then you go back and get the rope, I'll wait for you here, how about it?" Mu Feng said in turn.

"You said let me go back and get the rope, I'll go back and get it, I don't want to go back, I'll stay and watch this hole, you go back and get it!" Zhuang Hui's temperament flare up again.

This woman is really difficult, one moment reasonable, the next moment it becomes unreasonable.

"It's a waste of words, it's too much!"

Mu Feng snorted coldly, raised his leg and ran back in the direction of the camp in the direction he came.

"Lao Dong, call two people, bring a rope, and go with me, Zhuang Hui and I found a hole in the ground, and we are going to go down to have a look first."

"Leader Eagle, take me, will you?" Niu Fei volunteered.

"Okay, count you in."

"Be careful." Lan Xin commanded.

"I know we'll be back in no more than four hours, whether we find it or not." Mu Feng nodded and explained.

Armed with ropes and the necessary climbing and lighting equipment, as well as some supplies and first-aid medicine, the group of five set off.

Zhuang Hui guarded the entrance of the cave and did not leave.

She also cleared the weeds near the entrance of the cave, so that by the time the herd wind returned, the entire hole was completely revealed.

First, use infrared equipment to scan the position of the entrance of the cave to determine the cause of the formation of the hole.

"There is no need to do composition and age analysis, this is a volcanic vent, formed for at least thousands of years, judging from the volcanic rock and volcanic ash at the mouth of the cave, this volcano should be an extinct volcano, but there is a high probability of lava underneath, so, are you sure you want to go down and have a look?" Zhuang Hui said

"The volcanic vent is somewhat similar to what is recorded in the notebook, that is, it is too dark and the fog is so big, if there is a three-finger mountain nearby, then this is right." Pastoral wind road.

"What about the beauty, if you ask it, it may know." Zhuang Hui said.

"It doesn't know where it flies, and I guess I won't be able to count on it for a while." Mu Feng shook his head.

"Team Leader Eagle, Senior Sister Zhuang Hui, since we are all here, we might as well go down and have a look, even if it is not the black hole we are looking for, at least study the geological structure under this extinct volcanic crater, it will still be helpful for us to grasp and understand the formation of the Misty Forest." Cow Flyway.

"What Assistant Niu said makes sense, Eagle, it's all here, let's go down and have a look, what if it's what we're looking for?" Lao Dong also chimed in.

"Okay, leave two people above, me, Assistant Niu, and Lao Dong go down." Shepherd Wind assigned.

"What about me?"

"What is going on below, we don't know yet, so don't go down, it's dangerous." Mu Feng refused Zhuang Huidao.

"Do you look down on us women, I've experienced a lot of dangers outside over the years, maybe down there, you're not as good as me as a woman." Zhuang Hui snorted coldly.

"Since you're coming, come on." Mu Feng said, this Zhuang Hui does have advantages that none of them have.

These people, including Lao Dong, have no experience in cave exploration, although Niu Fei is also engaged in field geological prospecting and has some experience, but it is still a little worse than Zhuang Hui, a professional explorer.

"Eagle, the rope we carry is only 500 meters long, and it can't be safe if it exceeds 500 meters." Dong Haifeng reported.

"I know, we don't know anything about the situation under the cave, after we go in, we all be careful, pay attention to our own safety, once there is danger, we will immediately retreat." Mu Feng said solemnly.

As the team leader, Mu Feng was of course the first, Zhuang Hui was the second, Niu Fei was the third, and Dong Haifeng was the last, leaving two people at the entrance of the cave to answer at any time.

Da Da ......

The rocks at the entrance of the cave were slippery, and if you stepped on it, the loose stones would fall down, and you could hardly hear any echoes, and the bottom of the cave was deep enough.

The further down they went, the wider the passage became, the stones drier and the slope curved, which gave them more adhesion under their feet, and they could go down safely without ropes.

"Look, what's that?"

"It's a volcanic fungus, a species of bacteria from an extinct volcano that has been extinguished in life." Zhuang Hui recognized it at a glance.

"It's so beautiful, can you eat it?"

"It can be eaten, and it is also a precious medicinal material, one of the raw materials of a genetic medicine, there will be it before I came here, and there is such a large piece."

“……”

"Keep going, things grow there, and they won't run on their own." Mu Feng turned his head and shouted.

"Yes."

As we continued on, we soon approached the maximum length of the rope that could be put down.

But there's still no end in sight.

"Lao Dong, contact the people above, and say that we are going to continue to go down, so that they don't have to worry." Mu Feng commanded.

"Okay."

The passage below is very spacious, and you can still feel the majestic wind blowing on your face from time to time, the pungent smell is not very strong, it has been emitted for thousands of years, and this extinct volcano may no longer erupt.

The walls of the passage are very smooth, and it is conceivable that there was a fire at that time. The hot lava squeezes upwards through here and gushes out spectacularly.

After the eruption, the lava cools, or another outlet is found, and a hollow environment is formed underground, and the extrusion and movement of the plates for thousands of years have created a unique and complex underground world.

"Look, there's a sound of water up ahead?"

"Well, it's the sound of flowing water, isn't there an underground river under this volcano?"

"The world is full of wonders, there used to be molten slurry everywhere, hundreds of thousands of high temperatures, but what will become of it in thousands of years, who can say clearly, the place occupied by our Federation on Planet 17 was still a barren land a thousand years ago, but what about a thousand years later?" Zhuang Hui said, "It's not that we have transformed it into a paradise that everyone yearns for. ”

It must be acknowledged that humanity's ability to survive and transform was one of the best in the galaxy at that time.

Whoa......

After the rope was freed, the four of them could walk almost side by side inside, and the road here had become quite wide.

"What a big underground river!"

In front of the four of them, a wide underground river rushed forward, and the waves crashed against the stones on the bank, stirring up the waves and making a roaring sound.

"Eagle, our current location is about three and four kilometers from the entrance of the cave, and the vertical distance is about fifteen hundred meters." Niu Fei held the instrument in his hand and measured it.

Mu Feng nodded, the peaks of the Misty Forest were generally above seven hundred meters above sea level, and according to Niu Fei's measurement data, they had to go deep into the ground at least six hundred meters at this moment.

And the location where the Yuanjing mine is located is at least 300 kilometers deep underground!

This can also be confirmed from the record in the notebook of "Sweeping the World", he walked for more than a thousand hours before discovering the location of the Yuanjing mine.

According to the speed of normal people walking, about five kilometers per hour, considering the problem of physical strength and road conditions, in fact, it has to be halved and calculated, more than 1,000 hours, theoretically more than 2,000 kilometers, but on this basis, there is another discount calculation.

In other words, the road that "sweeping the world" really takes is about seven or eight hundred kilometers.

Because the underground road is not a straight line, it is estimated that the depth position of the Yuanjing mine in the underground is basically consistent with the position that is now mastered.

Such a magical passage to the underground is definitely not something that can be done by human forces, even the prehistoric civilizations that humans have now discovered in the galaxy, no one has the ability to do this.

There is only God or the work of nature.

"The water quality is clear and rich in a large number of trace elements, but some heavy metal ions exceed the standard and cannot be drunk directly, but only need to filter out heavy metal ions." Niu Fei said excitedly.

"It looks like we don't need to worry about water at least." Dong Haifeng said.

"The adventurer 'Across the World' said in his notebook that the river had almost no end and did not know where it was going, and that he followed the river, and ventured through at least seven turbulent tunnels underwater, the longest of which he held his breath underwater for more than thirteen minutes, and that time he almost died."

"Let's do a holographic scan of the channel first, let's go up first, let's discuss it, and then make a decision." Mu Feng decided not to go any further.

"Look, there's fish in the water!"

The waves rolled, and a snow-white fish suddenly jumped out of the water, if it weren't for Niu Fei's scream, it would have been really difficult for them to find it.

The snow-white body of the fish, the scales are the size of a palm, and the head, the long whiskers, the fins are facing the sky, like the back of a knife.

Poof!

The big silver-white fish fell into the water, hit the surface of the water, splashed, and disappeared in the blink of an eye.

What a big fish!