Prehistoric husband and wife salted fish turn over

After waking up, I continued to drive. After walking for nearly four hours, not only Sun Zhixin, but also other people felt this way: it seemed that the road under my feet became softer and softer, and the air felt more and more humid. There is a feeling of walking on the clouds.

The six people were all holding torches. In order to save the power of the flashlight, Sun Zhixin also held the torch in his left hand and the jungle field knife in his right.Staying in the cave for a long time without seeing the sun, the solar panels have become useless, and the power of the flashlight will be less, of course, it must be used sparingly.In terms of the effect of Sun Zhixin's electric solar panels, lighting them with a torch is not impossible, but it is extremely slow.But in order to protect the battery - it's just such a piece, there is no replacement, so it is simply omitted.

After bypassing too many rugged tunnels and paths, and drilling too many cave passages, no matter how wonderful and mysterious the scenery in the cave, the six of them felt numb.It looked like this all the way, all the people were tired of aesthetics, even Sun Zhixin had no interest in looking around, and only wished that Sun Xiaolu would move faster and find his destination sooner.

Four or ten minutes ago, Sun Xiaolu led the group into a long passage.The entire passageway is like a sheep intestine, twists and turns, narrow, and long and boundless. The wide area can accommodate one person to pass through, while the narrow area, a big man like Naaru or Tiger has to squeeze through like a sausage.The only advantage is that there is no fork in the road so far, like an intestine leading to the end, just go along it all the way.

"Where does it lead to?" Coben asked, trying to illuminate the inspector's torch further, but it was in vain.However, it was unexpectedly found that the entire cave wall was very smooth. Apart from being covered with many radial scratches, it was simply too smooth compared to other caves that everyone had drilled through.

Sun Zhixin also wanted to know the reason for the formation of this ghostly passage.Based on the walking speed of five people, judging by six kilometers per hour, it would take more than four kilometers to walk in four or 10 minutes.What the hell kind of passage is this?The curve distance is more than 4000 meters, and the straight-line distance is probably more than 2000 meters. Why don't you drill through the entire mountain?Let's look at the darkness in front of him, the tall man in the distance, and he doesn't know how far he will go. How did such a passage come about?

Is it a passage drilled by unknown underground burrowing beasts, or is it the uncanny workmanship of nature?For a moment, Sun Zhixin couldn't think of anything else, but was full of awe at the unknown power of human beings.Compared with those, human beings are really nothing!It's like Da Ben, an existence beyond his own cognition, but he is alive and well, so God knows what more strange things are there underground?

After another four or 10 minutes of walking, Sun Zhixin didn't bother to worry about the specific distance. He just felt that the air seemed to be getting more and more humid. Instead of getting colder, the temperature rose slightly.The feeling under his feet became softer and firmer, as if he was stepping on sand.

Surprising!

Just as he was about to tell others how he felt, Tiger, who has night vision ability, whispered, "There is no reflection from the cave wall, it seems to have drilled out. Be careful!"

"Drilled out? Ahh!"

As soon as the words fell, I saw the elder brother who was walking in the front stumble, screamed alas, and fell straight down all the way.

Sun Zhixin was shocked and shouted, "Naru, grab him!"

Before Naru could make a move, Alpha rushed forward and grabbed Goben's vest.As a result, he also stepped on the ground and rolled all the way down like a brother.

Sun Zhixin was so terrified that he rushed to the entrance of the cave, together with Naru, blocked Tiger and Zigri with their bodies, preventing them from taking risks, and shouted nervously: "How are you doing?"

In his eyes, he could only see that the torches that the two of them flew out of their hands were also rolling down all the way behind them, rolling along a very long slope-like thing until it rolled to the bottom before it stopped still.

I couldn't see anything more in the darkness, and the two of them rolled like gourds and didn't know where they were going.I could only hear Coben and Alpha coughing loudly. They called each other and looked for each other. After finding each other, they looked for the torch by the firelight, picked it up and shook it.Observing the distance from where the torch was shaking, it was far away from the place where the four of Sun Zhixin lived. A conservative estimate was several hundred meters. The torch looked as small as a matchstick.

"Cough cough, bah bah bah!" Goben coughed loudly, spitting something out of his mouth desperately.

Sun Zhixin was very anxious, but he didn't dare to go down rashly and put everyone in danger.On the other hand, Naru also grabbed him, obviously thinking the same as him, and just shouted: "Ben, Alpha, are you two injured?"

"No... yes. I didn't feel any danger." Alpha responded, spitting out something like Goben, and said: "The slope is very soft, and it's okay to roll all the way down, but it's full of mouth It's all mud and sand. Uh... no, I seem to have sprained my ankle... brother... brother Ben, help me, hiss... it hurts!"

Coben supported Alpha, handed him the torch, and shouted to the top: "Be careful, you will step on the ground when you get out of the hole, but there is a soft slope underneath, so it's okay to fall off. Just be careful and twist your feet." "

All four of them breathed a sigh of relief on the top. It is a good thing that no one was injured. Sprained feet can be ignored.

Tiger took a step forward, leaned over and observed carefully with a torch.

The power of the torch is really limited, and it's too dark to see anything clearly.Sun Zhixin turned on his flashlight, and only then could he see that there was a wide slope below the entrance of the cave, which seemed to be made of gravel, and the drop from the exit of the cave was four meters. No wonder the reckless brother stepped on the air and fell down.Fortunately, it is a soft sandy slope, otherwise the four-meter drop would be enough for a daredevil like Goben to drink a pot.

However, deep in the ground, where does the gravel come from?

Although the distance of the light cover of the flashlight is not wide, at a glance, the sandy slope and the surrounding places are all fine and soft sand like a beach.Wouldn't it be too weird for a landform like this to appear underground?

Before he had time to think, Tiger had already taken the flashlight from Sun Zhixin, untied the coil of rope on his body, let Naru and Zigli hold one end, and slid down along it neatly.

"Tiger, watch out!"

"It's okay." While talking, Tiger had already landed on the ground, and waved to the three people above: "It's safe."

Zigli looked at Tiger's position with his head, handed the end of the rope to Naru, and jumped off himself.

"Hey! Don't mess around!"

Sun Zhixin yelled, and saw that Qi Geli landed steadily beside Tiger, standing as evenly as a gymnast.

The physique of prehistoric humans is really... very speechless.

To be on the safe side, Sun Zhixin and Naru stayed on the top to find a stalagmite and tied a rope, and Naru climbed down the rope steadily, but Sun Zhixin just jumped down like Zigli.

As soon as it landed, there was a touch like a soft and solid beach under your feet. When your feet fell down, half of your insteps could be sunk. The entire terrain has a good cushioning effect, and no one can be injured.

Sun Zhixin leaned over to grab a handful of sand and dust, felt the feeling of them passing between his fingers when he held them tightly, only felt that they were much drier than the temperature of the air, and at the same time there was a strange temperature that made people feel There is an illusion of being on the beach in Miami.

Probably because Sun Xiaolu had never seen such a place before, and he was strenuously running wild on the sandy slope, with Huan'er trying to toss on it in different ways, until the dust was everywhere and he couldn't stop playing around in circles.

"Sun Xiaolu! Let's go!" Sun Zhixin shouted.

When the voice fell, he suddenly felt something was wrong, subconsciously amplified his voice and shouted again.

After yelling, Sun Zhixin really felt that something was wrong, and his expression changed drastically.

"What's the matter?" Naru subconsciously tensed up, calling the people around him to gather together, and asked again: "What's the problem?"

"Sun Xiaolu!" Sun Zhixin shouted loudly before saying to Nalu: "Listen, there is no reply!"

Tiger was startled, and also opened his throat and shouted: "Kill!"

A violent killing sound erupted, but the sound stopped immediately, and there was no echo at all.

Then Zigley and Naru also tested their pronunciation, and everyone confirmed that there was indeed no echo here.

No reply?Pronunciation and shouting in the cave, but there is no echo? !

Sun Zhixin looked down at his watch with a strange expression. The watch on his wrist had been working normally.Judging from the time indicated by the pointer, the current time is twelve noon.If you are outside the cave, the surrounding area should be bright due to the sunlight.But here it was pitch black, and the light of the torch could not shine five meters away, so there were only two possibilities, one, still in some strange place in the cave; Arrived at a place similar to the seaside or outside the lake, but the time is night.

But the wrist watch indicated that it was not night, and the body could not feel the cold of winter, but it was still very warm. At the same time, there was no starlight.

Still in the hole--

But there is no echo... What does it mean in the cave that there is no echo?

Or to put it another way, how big is the whole cave, so that the sound waves are not reflected and echoed in all directions to form an echo?

The phenomenon of echoes is common sense. Even prehistoric humans such as Naru knew about this phenomenon. After they could not feel the slightest echo, the faces of the four were extremely strange and surprised. They were subconsciously estimating the size of the underground cave they were in.

The result of the estimation is horrifying, and I am so surprised that I am not willing to believe that I am in a huge and terrifying cave, but I would rather think that I am standing under the night sky.

Coben and Alpha were still standing in the distance below, shaking the torches here, and shouted: "What are you yelling about up there? Come down!"

This voice thoroughly confirmed the fact that there was no response.

Zigli turned his head to look at Sun Zhixin, who was looking at his watch repeatedly, and asked, "Are you really sure that it is daytime outside the cave? Have we drilled through the cave and walked outside?"

Sun Zhixin shook his head and smiled wryly: "Impossible. It's winter outside. You and Tarim spent the most time at the entrance of the cave. You know better than me how cold it is outside. It's as warm as spring here, so I'm sure we're still here." In the cave... uh... I was pretty sure, but now that I'm in this situation... to be honest, I'm not sure anymore."

Tiger waved his arms proudly: "What are you afraid of? Come with me!"

Holding the torch high, he strode down like a meteor, and his movements are imposing—really like a pirate leader, very rogue.

The three of Sun Zhixin looked at each other, and Naru sighed, and said, "Let's go, no matter what it is, we'll find out after exploring."

Zigeli and Nalu guarded Sun Zhixin and walked down cautiously, while Sun Zhixin turned his head and greeted Sun Xiaolu: "Son, stop playing! Follow! I got lost and spanked your ass!"

Sun Xiaolu responded, spit out the things he had just picked up from the sand in his mouth, and followed.It has been chewing and chewing that thing for a long time, only to find that it is too hard to eat, and it can't feel any taste in the mouth after chewing, and I feel very upset.

Sun Zhixin didn't notice its small movements. If Sun Zhixin noticed, he would find that what Sun Xiaolu spit out was a round half shell!