"Captain, shall I bring the remote sensing device and give it a try?" , said one of the team members. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

"It's okay, it's still early, let's see what's going on below. Xiao Wang, you go too, bring the drone too! This time, they brought more complete equipment.

When the team members brought a set of small remote sensing devices, they also packed up and watched the excitement together.

"Wouldn't it, so deep?" The remote sensing device shows that there are enough three hundred meters, but it is not enough to see the bottom of the hole!

At this time, a whining sound sounded, and the drone planned to go down to find out.

When the drone enters the dense fog, the image transmitted back is also a burst of white fog. However, after sinking dozens of meters, the white fog suddenly disappeared, and what appeared in front of everyone was a crystal ice wall reflecting bright white lights!

"It's so beautiful!" , Xiao Li couldn't help but sigh. It is indeed very beautiful, and due to the uneven walls of the cave, many strangely shaped crystal pillars have been formed! The lights passed, and the lights were shining!

"It's like a crystal world! It's spectacular! Captain Wu couldn't help but admire. They have gone down to sinkholes, canyons, and caves with water, but this is the first time they have seen the frozen underground world!

"Xiao Wang, make a backup, these will have to be handed over to the survey team for research when you go back." , Captain Wu reminded a few people.

"Team Wu, the temperature is dropping!" The drone came with data showing that the temperature was dropping extremely quickly. It was still minus 10 degrees just now, and at this time it was more than minus 20 degrees!

"Our drones can only work in the minus 30 degree range, pay attention to temperature changes!" , Captain Wu also became serious. Just as they approached the 100-meter position that the last expedition team reached, everyone suddenly felt a little nervous, and they all watched the picture transmitted back attentively!

Eighty meters, ninety meters, ninety-five meters, it is a hundred meters at the sight, and the temperature is also displayed at minus 25 degrees, everything seems to indicate that this position does not seem to be as terrible as imagined!

But just when the distance from the indicator jumped 100 meters, suddenly the data transmitted by the drone made a violent chirp!

"Not good! The temperature drops dramatically, and the drone does not respond! Xiao Wang was anxious and wanted to raise the drone. But the drone didn't respond, and then the screen spun and it was pitch black!

Captain Wu and Xiao Wang looked at each other, their faces shocked!

"How so?" , Captain Wu still can't believe that this situation generally occurs in the sky, and only strong convective weather conditions will have this kind of cliff-like temperature drop!

"Look at the last picture that came back, maybe you will find something!" , Zhou Yu reminded them.

"Yes, yes, fast, slow down!" , everyone gathered in front of the monitor, and a team member used laptop software to slow down the video by 20 times!

What appeared in front of everyone's eyes was the picture transmitted back by the drone in the last ten seconds, and when I saw that when ninety-nine jumped to one hundred, the ice wall in front of the video suddenly narrowed, as if it was an upside-down wine bottle, to the neck! It is very likely that the narrow-mouth effect has been encountered!

"This is a problem, if we go down, the rope will have to hit the ice wall when we get here, in case it is broken?" , Xiao Wang looked at Captain Wu worriedly.

"In the evening, everyone discussed a plan." , the drone has no choice for the time being, so I can only wait and see if I can find it.

That night, in the tent, after eating, the nine people lit the miner's lamp and discussed the matter of going down the cave. Captain Wu is the most experienced, and he also spoke first: "In this case, I am most afraid of breaking the rope at a hundred meters, so my opinion is to have one more person go down and wait in this place." Next, let's go down to the two! This can be answered. When everyone heard this, they felt that this idea was good and agreed with it.

It's still early, and it's impossible for everyone to go to bed so early, so they all gather around their laptops to watch the drone footage. The strange shapes of various icicles and shapes make everyone breathtaking!

The next day, Zhou Yu woke up before dawn, and when he got dressed and walked out of the tent, he found that Captain Wu and the four of them were already busy. was carrying things, and waved his hand at Zhou Yu.

"What is this?" , Zhou Yu looked at the short aluminum alloy pillars with thick arms, and asked suspiciously.

"It's the latest type of under-hole equipment, which is erected above the hole and the rope is passed through it, so that we can come up with the help of a small winch." , Captain Wu explained.

"You have to be under a cliff to erect it?"

"Xiao Wang, they have already gone down to prepare." Captain Wu exhaled, and as soon as he left his mouth, it turned into a puff of ice mist!

After eating simple dry food, everyone worked together, and it was finally finished by nine o'clock. This time, Zhou Yu and Captain Wu went down, leaving two people at the 100-meter position, and finally Captain Wu accompanied Zhou Yu to look for it.

"Be careful!" , Everyone sent their blessings, Captain Wu helped Zhou Yu check the equipment on his body again, and then waved his hand to everyone, and took the lead to disappear along the cave wall!

The fog was a little lighter than yesterday, but there were no people to be seen two meters down the hole. Zhou Yu followed closely, grabbed the rope, stepped on the ground, and slowly went down!

"Don't rush, take one step at a time! Don't step on it! ", Captain Wu reminded Zhou Yu. Xiao Wang and a team member surnamed Liu above also came down on top of Zhou Yu's head.

"It's so much more spectacular than what you see on the video!" Down to about fifty meters, the fog is almost nothing, although there is not much light, but the reflection of the crystal wall makes the cave bright!

"Be careful!" Suddenly, Captain Wu reminded him urgently, and it turned out that Zhou Yu's eyes were attracted by the beautiful scenery that Xiao Wang said, and he stepped on a protruding thin icicle. Zhou Yu reacted quickly and quickly looked for another place to stay, but his feet still slipped, and his whole body hit the cave wall!

"Shhh , although he was wearing a down jacket and a jacket, the cave wall was a little uneven, which still made him feel a sharp pain! Fortunately, I didn't hit my head.

"How?" , The three of them hurriedly came to Zhou Yu's side and asked anxiously.

"It's okay! The clothes are thick! Zhou Yu pulled the corners of his mouth and replied briskly.

"Attention!" , Captain Wu saw that Zhou Yu had nothing to do, and his heart was a lot more relaxed. The main thing in this search for the body was to take a video of the geological situation below and send it back for the professor to study.

"Attention, it's a 100-meter position below!" Looking at the altimeter, Captain Wu reminded everyone.

"Understood!" , the three of them were also nervous, and the temperature plummeted, which was probably the cause of death of the three seniors in the nineties.

Sure enough, Captain Wu was the first to fall to the 100-meter position, and suddenly felt a burst of cold air drilling straight into his body, as if his blood was about to be frozen!

However, this is also a process of adaptation, and when he got used to it, he realized that the width of the hole of about five meters suddenly narrowed, and only about three meters remained! And the position in which you stand is level.