After trekking all the way through mountains and rivers, I finally climbed Savage Mountain.

After reaching the top of the mountain, the group entered a cave that had been dug out by hand, and then the people formed a circle and walked towards the bottomless hole.

Although the diameter of this hole is not wide, it is not as narrow as the thickness of a human waist as Aza said before, if you have to take a human waist as an analogy, it is also the waist of a big fat man of 300 catties.

In short, the diameter of the hole was barely large enough for an adult to enter and exit.

After bringing Zhou Xiaolong and the others to the entrance of the cave, Aza's mission was completed, and he began to stir around the grass with branches, as if looking for the so-called wooden pimple baby.

Jin Hui and Zhou Xiaolong both walked to the mouth of the bottomless pit, and like everyone else, they looked down from the hole at the same time.

Just by looking at it with your eyes, you feel like there's no bottom underneath.

Moreover, there is an extremely cold invisible gas in this cave, which keeps coming out, and if you accidentally touch those gases, your body will inadvertently shiver.

Of course, objectively speaking, maybe the gas is not so cold, and there are also human psychological factors in this.

Professor Cui slowly squatted down, changed a pair of glasses, and asked Gu Lili to turn on the flashlight and observe carefully.

Professor Cui found that the soil around the entrance of the cave was wet, and if you looked closely, the walls of the bottomless pit, from the entrance downwards, where the flashlight could shine, were all wet.

The thatch that grew inside was covered with small droplets, some of which were rolling down the walls of the cave.

Gu Lili couldn't help but say, "It's very damp, why does it look like a well?!" ”

Professor Cui turned to ask Azha, who was trying to find the treasure in the weeds, and said, "Brother Azha, is this hole really bottomless?!" ”

Aza glanced over and said, "Yes, I don't believe you take a stone and throw it down, and you won't hear the sound of the stone falling for a long time......

Aza continued his search, and he didn't seem interested in the bottomless pit.

Professor Cui asked Ouyang Lei to pick up a small stone according to what Aza said, picked up the small stone and threw it at the center of the cave.

Everyone immediately pricked up their ears and listened, three, five, ten, twenty, half a minute......

It's a quiet place, and if a small stone hits the ground or water, you should be able to hear an echo, but if you drop it for more than a minute, you still can't hear any echo.

Professor Cui couldn't help but sigh, "Oh, this hole is really deep!! ”

Everyone stared closely at the bottomless pit, and at first they all felt very nervous, but after a long time, there was no movement in it, and people's hearts gradually relaxed.

At this time, Jin Hui didn't say anything to everyone, he took out something that looked like an ultraviolet lamp from his backpack.

Ultraviolet lamps are generally found in canteens and restaurants, and they are used for sterilization and disinfection.

Of course, this thing that Jin Hui took out looks like an ultraviolet lamp, not necessarily an ultraviolet lamp.

People were a little curious when they saw Jin Hui take out such a thing.

Ouyang Lei couldn't help but ask: "Lao Jin, what are you doing with this?!" ”

Jin Hui smiled faintly, he glanced at Zhou Xiaolong, and then his gaze fell on Professor Cui.

Jin Hui said to Professor Cui: "Professor, the reason why our archaeological organization invited you to come here to investigate is not only that there are traces of human activities in this cave, but also that the murals on the wall of this cave need to be cracked......"

When Jin Hui said that there were murals on the cave walls, everyone was taken aback, and even the guide Aza raised his head and looked around, looking blank.

Because the walls of this cave are bare, except for some water stains, where are there any murals?!

At this time, Jin Hui didn't seem to be in any insanity, but why did he say that?!

Gu Lili straightened up, looked around with her eyes, and said to Jin Hui: "Old Jin, where is there any mural, are you kidding?!" ”

Ouyang Lei also helped: "Yes, aren't these all bare stones?!" ”

Professor Cui is an old scholar after all, and when he was reminded by Jin Hui, he looked at the device similar to an ultraviolet lamp in Jin Hui's hand, and immediately understood in his heart.

Then, Professor Cui patiently explained to everyone: "I think it is like this, the older murals were painted by the ancients with charcoal, because at that time only charcoal was used, and charcoal was the branches that had been burned, and although the charcoal was black, it was definitely not paint, so it could easily disappear...... Although we can't see it with the naked eye, we can still have some images left when illuminated by special lights, and there have been similar situations in some previous archaeological practices......"

Speaking of this, Professor Cui pointed to the equipment in Jin Hui's hand, and he said, "Lao Jin, do you mean that?" ”

Jin Hui nodded hurriedly, "That's right, don't worry, when I turn on the light, you will see the mural......"

Everyone looked at Jin Hui expectantly, waiting for Jin Hui to plug in the power cord and connect it to a battery.

After turning on the light, it immediately emitted a blue-purple light, but it looked much darker than that ultraviolet light, which was obviously a special device.

When the light was cast on the cave wall, all of a sudden, some thick lines appeared on the rough stones.

The lines are not black, but a light gray, with some words and some drawings, and as soon as the lights are turned off, the patterns disappear immediately.

After Aza saw the mural, he was very curious, and he no longer continued to look for the wooden pimple, but came over to watch the excitement together.

Although these on the cave wall are called murals, they are definitely not painted by professionals, and they are not at the same level as the murals in the underground palace where the cat demon was found before.

The murals here can only be described as graffiti by some people who can't draw, and they look like stick figures drawn by children with crayons.

However, this kind of primitive and childlike mural is very attractive to Gu Lili, a student with an art background.

Gu Lili liked it so much that she took out her camera and took several photos in a row, but this kind of mural had to be developed under special lighting.

Maybe it's a problem with the lens, whether it's with a phone or a camera, you can't take pictures of the pattern on it.

Jin Hui saw Gu Lili's anxious appearance, he smiled bitterly, and explained to Gu Lili: "You don't have to take pictures, we have tried many times before, and we can't use any kind of camera lens, the photos taken are just rocks without pictures, and we can only use this equipment to develop, so we invited Professor Cui to come to the scene to take a look......

(End of chapter)