The base, having already guessed that the enemy had entered the defensive circle, had not found where. ↖，

All nodes, with monitoring equipment and alarms, have been carefully investigated, but no work has been found.

Whether it is the animals in the mountains, or the birds and birds, they have not been disturbed until now, and the enemy does not seem to be close to the core area.

But how could they possibly relax? In addition to the core force of the maneuver, all the second-line personnel were dispatched, determined to find this group of infiltrated guys.

But they didn't know at all that Xue Lang and the ten of them had already entered the underground, and they would be researching and looking for it underground, to see if this place could get close to the base, and in the Ambilight, they would look at it while walking and walking in the direction of the base.

They don't need a sense of direction, this one has a willow defeat city, and it can't be wrong.

The moment they entered the ground and stood up, everyone looked at the scene in front of them in a daze.

In the line of sight, the stone waterfall flowing down, the stalactites with strange shapes, although the color is not the gorgeous and colorful of Chalangna, but it is also a rare landscape.

The little girl was the most excited, quickly armed, turned on the light above her head, looked around and asked excitedly: "Captain, is this better than Wolong Cave?" Will there be a landscape of Wolong Cave, the underwater world? ”

Xue Lang looked around, shook his head and said: "There is a spectacular here, but it is almost peculiar, it is estimated that it is a geological relationship, it contains fewer elements, and the color of the guide zhì is relatively single, milky white, yellowish only." ”

"That's pretty too!"

The little girl was excited, followed by the retraction of her mentality, walked to Liu Yucheng who was holding the compass, took out her computer, no longer looked at the beautiful scenery, and entered her role.

Indeed, they are not here to play, they are here to steal, or rather, treasure hunting.

Xue Lang nodded secretly with satisfaction, and after everyone packed up their backpacks, he gave the order to move forward.

The cave is slightly stuffy, and the oxygen is not very sufficient, but it is not so hypoxic.

I think that although it is not ventilated everywhere, there is also a source of oxygen.

Xue Lang still took the lead, in order to save electricity, only he and Du Rui at the end of the ten people turned on the lights.

Don't say that there are no enemies here, even if there are, then he is just their eyes and ears, especially Xue Lang, even if he can't see as far as the open environment outside, two or three hundred meters should be fine.

Walking less than 100 meters along the most spacious position, Xue Lang stood in a downward, waterfall-like position, looked carefully for a few seconds, and then ran straight down.

The slope here is greater than 45 crossings, which is very steep.

Fortunately, except for the flowing and condensed striped ravines, there are not too many pits, which can be regarded as smooth.

Ten people rushed at full speed, with wind in both ears, and in just a few seconds, they ran down a slope that was one or twenty meters deep, but dozens of meters long.

When the terrain eased slightly, Xue Lang slowed down and walked forward while looking at perception and observation.

There is no pattern to the caves here, and you may walk along the widest passages, but there is a dead end ahead.

Fortunately, with Xue Lang's super environmentally friendly pathfinding equipment, they won't hit a wall everywhere.

In the labyrinthine cave, Xue Lang was not in a hurry to lead everyone forward, he needed to find the underground river first.

Moreover, they had to go at a depth of 50 meters underground.

Although the detection of the base is not very deep when the detection reaches the limit of 3,000 meters, they want to dive into the core underground, perhaps beyond the height of the core, so as to avoid being captured by the detection signal and not waste time in the shallow depth.

Therefore, as long as you see the wide passage downward, you have to give it a try, all the way, not out of the kilometer, but deep into the ground forty or fifty meters.

At this time, not to mention that the base would not guess that they had entered the wolf's den, let alone that they had gone dozens of meters underground.

At this time, they are still nervously rummaging through every inch of land, looking for enemies who have entered the defensive circle.

In the team, Liu Yucheng and Zuo Boyang still followed Xue Lang closely, one left and one right half a step behind. Behind is Jasmine.

And in the entire team, in addition to Xue Lang's focus all the way, Liu Yucheng and Jasmine were busy.

With a compass in hand, Liu Yucheng kept looking for the location of the underground river to provide Xue Lang with a reliable direction.

Jasmine, on the other hand, kept silent, working on her computer as she walked, and kept spraying in some of the places she walked.

Obviously, she was recording the paths she had taken, marking the locations she had walked, leaving clues.

Jasmine-sprayed things are invisible to the naked eye and do not reflect light, but they can catch them with their night vision devices and tactical eyes.

Jasmine is not just a mark, but a direction, and a number.

In this way, once they need to evacuate separately, without Xue Lang's guidance, they can at least return the same way without Xue Lang's guidance, so that they will not be trapped underground and starve to death.

In the cave, except for the slight rustle that echoed as they walked, there was no wind, and it was quiet and oppressive.

When you get here, if you stupidly use the flames of some torch to find a way out, ten out of ten are doomed to die.

Except for the gradual humidity of the air and the beginning of wetness on the stone walls, there has been no change here, and even the air has not changed except for the humidity.

After walking for more than an hour, Xue Lang realized how difficult the original decision was.

They often have to go back and forth several times in order to descend the height, if it weren't for the little girl's memory and clear marking, even Xue Lang would be confused.

It's not a manual excavation, so there's no pattern to be found here.

However, in the past hour or so, Xue Lang and the others have confirmed their previous speculation, that is, after more than twenty meters here, there are no longer occasional holes, but holes are all over, and there are stone stalactites, stone mantles, and stone waterfalls everywhere, and even the original rocks cannot be seen.

The entire underground, it can be said that there are thousands of holes, there is not much of a cohesive position, estimated, walked, the largest link as a whole is only one or two hundred meters in diameter.

Stepping on the already dripping water, Xue Lang stood on his feet and asked without looking back, "Jasmine, how deep is it?" ”

Jasmine stood on her feet and said, "At present, the depth is thirty-six meters, and the total length from the entrance is five hundred and one hundred meters, and the straight-line distance is four hundred and twenty meters. ”

I walked more than 400 meters......

Xue Lang looked at the darkness in front of him and said, "Rest first, sir, how far is it from the underground river." ”

Everyone put down their backpacks one after another and sat directly on their backpacks.

A backpack with a waterproof camouflage cloth is better than sitting in cold water.

Liu Yucheng looked at the compass and said: "Look at the straight line distance is still five hundred meters, I don't know how far it will go, at present, our depth is not enough." ”

Xue Lang took the kettle handed by the little girl and took a sip, swallowed it slowly, and said to her: "It's complicated here, the distance in a straight line is five hundred meters, I don't know how long it will take." ”

Zuo Boyang moved his shoulders and smiled indifferently: "I have already explained to the headquarters that at least half a month, our signal transmission is not delayed ten meters from the ground, find it slowly, I don't think there is a problem of time, or find the underground river first, and descend to a certain depth, but don't be buried alive by blasting above." ”

Jasmine put away her notebook, looked at the darkness in front of her, and continued: "There are dead ends and detours along the way, I have already planned it, and I can save more than one-third of the journey when I go back according to the numbers marked at each turning point." ”

Bing Linghua handed her a piece of beef jerky, and said with a smile: "I really don't know how many things can be in your little head, I can see what you mean, but unfortunately, after a long time, I don't know how you calculate shortcuts, and I am dizzy." ”

Jasmine took a bite and smiled: "How can it be so profound, in fact, it is a stupid way." ”

said, the conversation changed: "This place is so magical, if it is known by the outside world, it is really an excellent place for exploration, even those geocentric adventures or something, there is no need to artificially create the scene, go directly to this shot, absolutely shocking." ”

Oh, yes......

The thought crossed everyone's minds.

Along the way, it has been a few hours of walking, twists and turns, if it weren't for Xue Lang and Jasmine, it would be a problem for them to go out, but the scenery along the way can no longer be described in words.

Because of this, after walking for less than half an hour, Xue Lang adopted Jasmine's Jianyì, and asked Bing Linghua and Drill Sky Mouse to record a qiē along the way with the video that came with the helmet.

It's so beautiful, it's so majestic, they get to this point, and they don't know how to describe it.

Everyone was silent, they didn't know what to think, they all chewed their food silently.

Xue Lang actually didn't think about it so much, this is the land of Mexico, no matter how good it is, it has nothing to do with him, he was thinking, if he could, he would think that he would go back and have time to explore the karst cave in Chalangnahe, and increase some adventures and curiosities beyond viewing.

The terrain and environment there are so special, maybe you can find some other magical things, and there are also magical fish in the legendary hot springs and cold springs.

The thought passed by, and I felt funny.

Lately, he has become more and more receptive to the mythical occult things, and no longer doubts that they may really exist.

After resting for more than ten minutes, everyone packed their bags and set off again.

Everyone's thermal weapons are all in the backpack except for the pistol.

This is a cave, not to mention that there are no enemies, and even if there are, it is not wise to shoot.

They have invisibility cloaks, which are even more deceptive in such a single environment, and in addition, the gunfire in the cave will be infinitely amplified, killing the enemy, and deafening themselves.

If there really is any monster or something, the gun may not be better than the ghost in their hand.

In addition to a base number of ammunition in their backpacks, each of them carried more than half a month's worth of food and explosives, as well as some necessary equipment. Therefore, their battles are destined to be linked to cold weapons.

Headquarters, which has lost track of them, cannot be contacted.

In a nearly confined environment, more than 30 meters, the signal cannot be transmitted.

But no one in the family was worried, and the flying eagles hidden on the periphery didn't think that Xue Lang would be in danger or anything.

Well, he still doesn't know what ylang-ylang is, but he does know it.

After Xue Lang's explanation, he knew that even if he invaded a certain country's national defense building, the head of state's mansion or something, except for automatic weapons, people would not be able to stop them, let alone chase them.

He'd seen the sharpness of this thing, and he hadn't followed it into a base.

Underground, Xue Lang and the others were getting stronger and stronger along the way, and the air could no longer be called moist, but like drizzle, the blindfold had to be wiped from time to time.

The air is no longer so dirty, although not like a forest after rain, at least it is fresh.

It's been seven or eight hours of walking, and I can't hear much of their footsteps in the cave.

The noise of running water makes the ears buzz all the time, although it is not big, but it is very clear.

This is separated from the cave, and the echo will be quite dense, which is also the main reason why the detection equipment cannot go deep, not the relationship of the magnetic field, but the sound wave, the magnetic wave continues to reverberate, interfering with the detection of the signal.

Here, too, spacious, huge caverns began to appear. A big pit, the height, I am afraid that there are tens of meters, and the width is also dozens of meters, which is very huge.

And Xue Lang and the others have also approached the underground river infinitely.