I was stunned by what I saw: how could this be?! Could it be the same people who left traces at the entrance of the cave?

With a fluke, I hoped that some of the petroglyphs would still be left, so I hurriedly checked them out to other places. Pen % fun % Pavilion www.biquge.info

But soon, I despaired, because the result was exactly the same, but all the cave walls with petroglyphs were destroyed, and the grandson of this shovel of petroglyphs was still completely destroyed, judging from the traces on the cave wall, he should have used something similar to a shovel to directly cut off the surface of the cave wall! In an instant, there were 10,000 alpacas running wild in my heart!

Heart Dao, this is a rare relic, not to mention how many secrets it hides, its archaeological value alone is immeasurable!

I was secretly bitter in my heart, and at the same time, a feeling of extreme frustration hit me!

Discouraged, he couldn't help but sigh secretly, it seems that it is impossible to find clues from these petroglyphs!

But I'm not the kind of person who throws in the towel easily, and I thought to myself, even if the petroglyph was gone, at least it told me one thing: someone didn't want anyone else to know about it!

Since they've been here before, they'll leave some clues.

With my heart in mind, I began to search the cave carefully, hoping to find some relevant clues.

But when I shone my flashlight on the ground, I realized that it had been cleaned! I wiped it, what the are these birdmen, and they are so cautious?! After checking all the corners of the cave, I didn't find any suspicious traces.

I was completely discouraged.

Sitting on the ground and smoking a cigarette, it seems that he can only quit first!

After jumping from the mouth of the cave, I was about to exit the cave, but I took a flashlight and took a random photo, and suddenly found that many footprints actually extended into the depths of the cave.

The back part of the cave is quite damp, and from time to time there will be underground water dripping down the roof of the cave, and the sound of ticking and ticking spreads in this quiet space, coupled with the echo in the cave, it seems a little ghostly, and the atmosphere suddenly seems a little weird.

Unconsciously, I shrunk my neck, alone in this environment, I was still a little scared, but when I thought of the purpose of my trip, I quickly made up my mind, and I still felt that I should continue to investigate.

These footprints are numerous and miscellaneous, and some of the stones have traces of trampling on the mud caused by dripping water, and the direction of the toes points to the depths of the cave.

I took a closer look and found that at least four people had passed through here.

It's almost impossible to get rid of all the traces you leave behind in this environment, unless you can fly over! The reason they're so blatant is simple: they don't care if anyone else finds them, or if there's another exit to the cave from here!

After thinking about it for a while, I decided to follow these footprints all the way.

The inside of this cave is really big, the more inside, the larger the space, and finally, with a flashlight, you can basically not see the top of the cave, and the width of the cave has reached thirty or forty meters. It is full of rocks, and it seems that it was formed when the mountain was compressed. So, the further you go in, the more difficult it is to walk.

After walking for about ten minutes, there was no more water seepage and dripping on the roof of the cave, and the environment was slowly becoming dry. The cave began to grow shorter and narrower. Eventually, those footprints disappeared completely. Because the stones of this thing are relatively large, the marks left by people stepping on them are not obvious at all, so I have to rely on the thin layer of dust on the surface of the stone to continue to chase down, so that the speed is almost negligible.

Fortunately, I was still very patient, and I didn't think too much about it, and I focused on tracking these people's tracks.

I don't know how long it took, the height of the cave was only more than two meters high, the width was less than four meters, and at the same time, a one-meter square spring appeared, and the outlet of the spring was an underground river, and all traces disappeared by this underground river. Because the path to the cave at this moment is simply a river, only a small area at the front end is not occupied by the river.

But I didn't give up, I tried the water temperature first, and found that it was not cold, but a little warm. I went around to the other side and checked it carefully for a long time, only to find that these people seemed to have disappeared here!

Are they following this dark river?

I didn't think much of it, I took off my shoes and socks, rolled up my trouser legs, stuffed them into my bag, and continued to explore the depths of the cave along the dark river.

This dark river is not wide, at most three or four meters, and the depth is only knee-deep, the water flow is very slow, and it is very clear, you can see the situation in the clear water, but there is still no trace of life.

After about ten minutes of touching forward, I noticed that there was a slit in the wall of the cave on the right, which was only large enough for one person to pass sideways. I stopped, looked closely, and saw that there were obvious signs of rubbing against something at the edge of the slit, and even more so on the stone wall inside the slit!

I pondered it for a while and decided to follow up and check it out.

The slit was so narrow, and the bottom was full of gravel, and there was no place to put your foot, let alone shoes. I had to start squeezing into the slit barefoot.

When I was in the water, because the water temperature was relatively high, I didn't feel any special feeling, and as soon as I got ashore and stepped on those stones, I quickly felt the biting cold! Moreover, the stones were not very smooth, and most of the gravel was angular, except for the cold, the taste of the feet was really not very pleasant.

But now I couldn't take care of that much, so I took my bag in my hand and moved deeper into the slit step by step.

Luckily, about fifty meters later, there was another open space at the exit. After squeezing out the slit, I used a flashlight to look around, and found that this place was actually artificially processed, and it was still very large! I wanted to look at it more carefully, but the biting cold on my feet made me have to solve it first!

After putting on your shoes, this is when you start to take a closer look.

It is a semi-natural cave, about thirty meters long, perpendicular to the slit. It is about fourteen or fifteen meters wide and at least more than four meters high. On the opposite side was a huge concrete wall with two large gates embedded in it, flanked on either side by one of those large green oil drums, with 'No Fireworks' signs on them, and some of them skull signs. The middle part is supposed to be a passage for entry and exit, and there is nothing.

After checking it, it was found that it was supposed to be an oil drum used in the army, but most of them were empty!

There are a few explosion-proof lights scattered around the walls of the cave, and it must have been some years old, because the metal protective nets on the outside of many of the lights have rusted.

The two huge iron gates directly opposite were about four meters wide and three meters high. On the gray iron door, the paint is mottled, and most of the places have been rusted, but a few big white characters can still be faintly seen on the door: Standing and prohibiting!!

I've been dealing with foreigners for many years, and when I read this text, I immediately understood that this should be something left over from little Japan. At that time, in order to consolidate the defense line in the northeast, little Japan built a lot of underground fortifications at the junction of the three eastern provinces and the Soviet Union, which was very close to Mongolia and the Soviet Union at that time.