The leisurely countryside of the live broadcasting mountain master

Chapter 238 Unreasonable Night Vision Ability
There are a few inconspicuous bloodstains along the way, which are difficult to detect with the naked eye under the faint light of the flashlight and among the dark rocks.

This kind of rocky ground will not leave any footprints, but the monster will leave some traces when dragging the corpse. Ordinary people can't see it, but Yu Yishan can still distinguish it.

Tracking is not a difficult thing for him.

After chasing him less than one kilometer, Yu Yishan found the body of the captured poacher on the side of the road.

The body was dumped on a large uneven rock.

Yu Yishan turned on the miner's lamp, went up to check, but found that the corpse was missing a head, which had been bitten off from the neck.

The other parts of the corpse are considered complete, except for the traces left by dragging on the ground, there is no sign of monster bites.

He looked at the fracture of the neck of the corpse. The teeth marks were very thick, the fracture was in tatters, and the stone was drenched in blood.

Not long after the time passed, the body was still warm, but the dead couldn't die anymore.

This monster doesn't seem to be hunting humans for food?
Yu Yishan was a little angry in his heart, this bastard kills people for pleasure?

He had no intention of dragging the corpse back for the time being, and bringing the corpse back now would have no other benefits other than scaring people.

If you want to drag it back, you have to drag the monster's body back together, and you have to find the head of the body, and try to bury it as a whole body.

Searching around, Yu Yishan found traces of suspected monster footprints.

In this cave, apart from his group, this monster should be the only one active.

Without hesitation, Yu Yishan continued to follow the footprints.

The monster seems to be moving very fast, at least faster than Yu Yishan in tracking mode.

Yu Yishan chased for more than ten kilometers. It took more than half an hour, but he still failed to catch up with the monster.

He was a little puzzled, this ghost thing can run so fast in a completely dark cave, does it really have night vision like infrared?
This is a bit unreasonable.

In nature, it is impossible for any creature with night vision ability to see things in the absence of light.

The so-called night vision can only see things clearly in very weak light.

In this cave, there is no light at all, and even animals with night vision will become blind.

This has something to do with the structure of the eyeball of the creature.

Some animals have a special eyeball structure, the fundus of which is in the shape of a concave mirror, similar to the inner shell of a flashlight, which can focus the input light to the focal point, so that they can see more clearly.

This is why the eyes of some animals glow brightly at night, which is the reason for the concentrating reflection of the concave mirror, especially when the light is shining on it.

In addition, the cells in the eyes of night-vision animals are somewhat different.

There are two types of visual cells in the eyes of living things, one is cone cells and the other is rod cells.

Animals with night vision have more rod cells in the retina, and the rod cells are very sensitive to weak light, so these animals have better low-light vision function.

In addition, the diet structure of these animals also has an impact on night vision.

For example, cats like to prey on rodents and fish. These foods are rich in taurine, and taurine helps to see things in low light, so cats have better night vision.

However, no matter how good the night vision ability is, it needs even a little bit of faint light.

In an environment with no light at all, no matter how good the night vision ability is, it is useless, after all, the eyeball itself does not emit light.

Without light, there is no image, and the retina becomes a display.

Yu Yishan couldn't understand the speed of this monster's movement. How can a blind man run so fast?
Can its eyes shine?
This is worth studying.

Yu Yishan decided to catch the living.

After continuing to chase down for a few kilometers, Yu Yishan was stunned again, and there was another spacious hole on the wall of the cave here.

This hole is similar to the one Yu Yishan found in another direction just now, and it can also accommodate many people walking side by side.

This cave is also suitable for those mummies to pass through collectively, that is to say, those ancient people may also have come in through this cave.

Yu Yishan checked the traces on the ground again, and found that the monster also ran into this hole.

He observed the cave carefully again, and found that the cave seemed to be going down, which was completely opposite to the previous cave.

As for whether to go up to get out or go down to get out, it is hard to say, both are possible.

If you go up, the cave entrance may appear on the top of a certain mountain, if you go down, the cave entrance may appear at the foot of a certain mountain—or on a certain mountainside.

This kind of thing has no rules at all. If you want to know the answer, you can only check it yourself.

Yu Yishan smiled helplessly. Originally, he planned to explore the way out tomorrow, but he didn't expect to chase the monster today, but he chased him to the entrance of a cave.

How many caves like this are there in the belly of the mountain?
Look at the darkness that is still far ahead, and feel the subtle flow of air.

Yu Yishan felt that the existence of this kind of cave should not be a coincidence, not just one or two alone, there should be more caves in the darkness ahead.

So the question is, do these caves lead to the outside of the mountain?
If there are many passages leading to the outside of the mountain, after so many years, there will always be a hole discovered. These weird mummy in the mountain belly should have been discovered long ago, right?
However, if these caves do not lead to the outside of the mountain, where will they lead?
Yu Yishan was a little curious.

He didn't intend to let the monster go, now that he has chased it here, he will continue to chase it.

Then simply chase into this cave to explore, to see where this cave leads to, and whether it can lead to the outside of the mountain and leave the mountainside.

It seems that there is no sleep tonight.

Thanks to my brother, I have practiced before, otherwise... I really couldn't bear it tonight.

Yu Yishan shook his head, then picked up the miner's lamp, jumped into the cave, and continued to chase along the spacious passage.

This cave is not too tortuous, and the passage has always been spacious, the road ahead is clear, and there is no need to consider accidents such as scratches when running in Yishan.

There are also side roads, but they are obviously much narrower than the main road. Normal people would not go on such side roads, so there is no chance of getting lost.

On the way of running, Yu Yishan noticed that there were traces of man-made repairs in this cave, but there were not many.

It seems that the existing cave has been artificially widened because some places are too narrow.

This means that there must be something at the end of the passage, otherwise why do we need to build roads?

(End of this chapter)