When Yu Shan wanted to pull out his other leg, the sinking speed increased.

Yushan sanks very quickly. If Qian Xiaohao hadn't been behind, Yushan might have disappeared here.

Qian Xiaohao had quick eyes and hands. Seeing Yu Shan sinking quickly, he immediately pulled Yu Shan out.

"If only one person is trapped in the quagmire, how can you save yourself? This place is like a swamp, and it is very dangerous." Yu Shan said with lingering fear.

"Let's go! Around this place." Qian Xiaohao also sweated coldly. The past two days have been going well, and he forgot that there is still danger.

"Wait, I seemed to have stepped down just now, otherwise you wouldn't be able to pull me up." Yu Shan recovered for a while and immediately grabbed Qian Xiaohao who wanted to leave.

"Have you stepped to the end? It doesn't look very shallow here." Qian Xiaohao said with disbelief.

Yu Shan looked at the mud and said thoughtfully: "But I did step on a hard thing."

"Dig it out, it's not difficult anyway." Qian Xiaohao said immediately.

Qian Xiaohao pulled out a folding engineer shovel from the side of his backpack, packed it up, and immediately excavated.

There was also a handful of Yu Shan’s backpack. Two people slowly cleared the edge of the mud. In just over a dozen minutes, a cross-section was dug.

"Is this a turtle? Haha, your luck is like stepping on a ****." Looking at the things curled up in the mud, Qian Xiaohao immediately burst into laughter.

"It's not just a turtle, what do you think this is?" A little further in front of the digging land in Yushan, a lot of water can still seep out of the silt there.

Looking at the light yellow thing that was winding in the mud like a snake, Qian Xiaohao said in surprise: "Eel?"

Yu Shan shook his head and said, "It's not Huangshan, it's a loach, it's the thing we saw in that pool yesterday. This thing has a considerable jumping ability."

"Such a big loach?" Qian Xiaohao was a little surprised.

Yu Shan said: "I'm curious about what these loaches do in the mud."

"It looks like hibernation, but the loaches in the pool over there are jumping around." Qian Xiaohao was also a little strange.

Yu Shan looked around and said, "Maybe the environment here is different. If you dig it up, you may find a turtle. If you catch a few more, you will be considered a profit after this time."

The two dug for more than ten minutes, but this time they did not find the turtle. Instead, they caught many grass shrimps trapped in small puddles in the mud. These grass shrimps were not small in size, the smallest one was more than ten centimeters long, absolutely large.

In this way, the turtle was not found, and a few kilograms of grass shrimps and a dozen loaches were found.

Without more gains, the two of them could not continue digging the soil.

"Go over here and keep moving forward." With some gains, the two of them could not give up halfway.

There was no way, the two of them could only lie down and use their chest, arms and the entire body to press the mud. First lift one leg up, then pull out the other leg, and then maintain this position and swim out like swimming.

Anyway, I was covered in mud, so it would be nice to climb over like this.

Bypassing the boulder, going straight to the pool from a point upstream, and going down the waterway, the two of them soon entered a wide beach.

The water from the pool is flooded to the waist, and it is biting cold. Fortunately, it won’t make you in and out like a mud.

The cave in front is relatively short, so I can only walk over it with my waist. After a while, I will reach the mud flat and enter the mud area where my thighs are buried.

At the end of this mudflat, another river was found, flowing quietly. There was no sign of it at the location next to the boulder just now.

However, Yushan found some aquatic creatures at the bottom of the water, including loaches, grass shrimps and some small fish. The number was not large, so Yushan would not make a fuss.

Continue to move forward, there is indeed another underground river, which confirms Yu Shan’s initial judgment.

The silt river is very short, the highest place is less than one meter high, and thick silt is buried underground, making it look even shorter.

Walking in the mud, you can't stand up straight, and you hold your waist and hold your hands in the mud with your hands. It is a painful thing.

I was so tired that I could only lie down or kneel in the mud to rest. This damn short hole has always been so short, and I am getting shorter and shorter.

The two of them climbed through many holes and also climbed through very short water holes, but this was the first time they climbed very short, and there were still mud holes with silt flowing water underground.

Sometimes, I was so short that my face was almost pressed against the water. After walking forward for a long time, there was no sign of heightening in the cave space.

On several occasions, the quagmire suddenly became very deep and almost flooded to the waist. They could only be in front of them, making sure to step on the solid ground completely, and the other person followed up. The previous person was trapped in, and the latter person pulled him out.

Therefore, during exploration, wisdom is more important than knowledge and skills. If they are reckless men with only spinal cord but no brain, they may fall into the mud and wait for destiny.

There is a section in front of it. The silt is deep below, but the surface of the silt is stronger. Standing on it, walking quickly, and you can jog over it. This is very fun.

But if you accidentally step on it, you will fall into the mud. Qian Xiaohao is heavier and the mud shell can't bear it. They have to pass by the opposite side because the mud will be too deep and will be trapped inside.

The two of them tried for a while and finally concluded that the area they would bear would be larger when they kneel on them and would not fall into it.

Qian Xiaohao then knelt on the mud shell. When one of his legs was kneeling and the other was about to exert force, the mud shell suddenly broke and knelt into the mud, revealing a head on it.

Yu Shanyi was nervous, and he stepped on the solid ground, both of them couldn't help laughing. Such a mess was so funny.

Although it was very difficult to walk and dangerous, they finally reached its end with gritted teeth.

This place suddenly became a very high space, even as if it was the bottom of a shaft, but if you look closely, you can't see the space outside from the top.

The cave ended in this very high and narrow hall. The water flow came from the bottom of the rock wall, and it was also a buried stream under the cave. The mud and sand were buried too much, and even if you dive, you could not pass the height of a person's space.

"Have we been here in this place?" Qian Xiaohao was a little stunned when he saw this shaft.

Yu Shan smiled and said, "Aren't you the best at measuring directions?"

Qian Xiaohao immediately took out the orientation map he drew, and laughed out loud in a moment.

Seeing the entire drawing being hooked up, Yu Shan knew that they had indeed walked through all the caves that could be passed through underground.

A complete cave map was drawn, and they could clearly see that the entire cave system should have been explored by them. There may be some small branch caves that have not been reached, but they must have walked through the main caves, which made them feel very pleased.

Their expedition was also successful. They solved several questions and gained a lot, but they were all local specialties.

It's still around 6 pm, and neither of them wants to move anymore. They decided to go out tomorrow and have a good rest in it tonight.

Yu Shan and Qian Xiaohao's clothes and shoes were all thick mud, and there was no change in clothes, so they just took a bath, washed clothes and washed shoes in Yinhe. It was too difficult to wash, and it took more than an hour to wash.

It is better not to wear soaked clothes. Keep them cool and cook naked.

It was still too cold, and I had to bite the compressed biscuits on the stone while running to keep warm. I couldn't lose the heat here.

Pang Tong, who was left behind outside the cave, was so considerate that he threw a lot of grilled sausages on the two of them and fell on the pile of rocks with human bones.

However, the bag of cakes in the air was smashed to pieces by the rock wall. The two of them searched for a long time and only picked up two, and one of them could not be found. The one they picked fell on human bones.

The pile of two-story high piles at the bottom of the shaft made Yu Shan curious, with the human bones, a lot of stones and soil inside.

Qian Xiaohao didn't want to touch these things, and at least 70 people's corpses were buried here.

Yu Shan had no scruples, so he decided to dig it and see if he had any discoveries.

Qian Xiaohao had already gotten into the sleeping bag and didn't have a good rest last night. Today he planned to have a good sleep.

Yu Shan thought of digging two skulls and putting them next to the head of his sleeping bag. When he woke up in the morning, he would suddenly find a skull on one side. This must be very funny.

It seemed that rain was falling on the shaft. On the two-story piles of human bones, rocks and other soil branches and leaves, Yushan searched them with a flashlight, and only found the human thigh bones and some pig iron blocks.

In addition, a snake was found. It seemed to be hibernating and did not touch it. There were also a few spiders, centipedes and scorpions. It can be said that it has all five poisons here.

After digging with a engineer shovel for a while, Yu Shan knew the hard work of archaeology. This armed shovel seemed to be cutting down a big tree with a pencil sharpener when dealing with the stone pile here.

After digging for a long time, there was no progress, Yu Shan lost his patience. He originally wanted to leave his soul and explore it, but when he thought of the various strange animals here, Yu Shan let go of this thought.

It's getting late now, it's time to go to bed.

After getting up in the morning, I continued to eat compressed biscuits. It was really hard to swallow. I drank water and vomited again. I swallowed it back. I had to eat more. The climbing back was very difficult to consume physical energy.

After talking to Pang Tong, who was left behind on the ground, Qian Xiaohao carried a bag and then hung a heavy rope bag, and put it on first.

Yushan collected the rope and finally went up. When Qian Xiaohao was rising, Yushan left the shaft entrance and closed his eyes in this quiet underground cave and listened carefully to the movement here.

Without the disturbance from the outside world, any sound that occurred underground seemed to have been amplified countless times and could be heard clearly by Yu Shan.
Chapter completed!