"What a magnificent view!"

The scenery on the top of the crown is breathtaking, and there are countless giant dragonflies flying by, which makes people dizzy, and the audience can't help but blurt out, and the feeling of being in the primitive wilderness with the anchor emerges in their hearts.

Compared with the excited audience, Li Kai's performance was more cautious, there were too many giant dragonflies passing around, and once he was discovered, he might be besieged by these carnivorous insects.

However, when Li Kai's eyes turned to the other direction, he made a new discovery, and he saw that in the midst of a primeval forest, a huge cone-shaped mountain was raised, without any vegetation in the whole body, and from time to time bursts of white vapor erupted from the hillside.

"There's actually a volcano here!" Li Kai said in surprise.

Although he had never seen a real volcano, it did not prevent him from recognizing such a mountain.

Volcanoes are a common landform in which there is a magma field beneath the earth's crust, and once the magma rushes out of the surface from a weak part of the earth's crust, a volcano is formed, which is the most explosive force on the earth.

"Volcanoes are known to everyone, so I don't need to say anything more, but there are three types of volcanoes: active, extinct and dormant. Li Kai explained to the camera, "Active volcanoes refer to volcanoes that are erupting and are expected to erupt again, but so far there is no strict standard, but the volcanoes that have historical eruptions and eruptions are called active volcanoes, and there are more than 500 such active volcanoes in the world." ”

"The extinct volcano refers to the eruption that has occurred in prehistoric times, but has never been active in the period of human history, such volcanoes have not erupted for a long time, have lost their ability to move, and some extinct volcanoes have even suffered weathering and erosion, and the Kilimanjaro in eastern Africa and the Datong volcanic group in Shanxi, China are all extinct volcanoes. ”

"Dormant volcanoes are volcanoes that have erupted in history but have been dormant for a long time, and they still have the capacity for volcanic activity. Li Kai continued, "From the intact cone shape of this volcano in front of us, as well as the hot gases that erupt from time to time, it can be seen that this huge volcano is a dormant volcano, and there is still the possibility of eruption. ”

"Prehistoric volcano, it's so dangerous, Xiao Kai should stay away."

"Such a big volcano, I was so cautious when I saw it"

"What are you afraid of, didn't the anchor say it, this is a dormant volcano that won't erupt in a short time"

"That's it, the anchor takes us to see what a prehistoric volcano looks like."

"Speaking of dormant volcanoes, why do I think of Yellowstone volcano"

"Yellowstone is supposed to be a dormant volcano, but it seems to have entered an active period lately?"

The audience was just as curious as the baby, and they discussed.

Seeing the barrage drifting by, Li Kai was also interested and joined the discussion: "Everyone is right, the super volcano located in Yellowstone National Park in Wyoming, USA is a dormant volcano, also known as the Yellowstone supervolcano group, which is the largest super volcano in the world today, which erupted on a large scale about 2 million years ago, 1.3 million years ago and 640,000 years ago, and the scientific research community believes that it has an eruption cycle of about 600,000 years. ”

"In 2011, scientists warned that the Yellowstone volcano may have entered an active period, and once it erupts, it will be a global disaster, and the force of the eruption is enough to make two-thirds of the United States uninhabitable, plants can no longer grow, and the earth's ecology will be seriously damaged, and even affect the climate, leading to the recurrence of the ice age. ”

But don't worry too much, Americans are definitely more concerned about this, and the Yellowstone Volcano Observatory, a joint venture between the Federal Geological Survey, the University of Utah and Yellowstone National Park, has been closely monitoring volcanic activity in the area, and every move of the volcano is being monitored by scientists. ”

After speaking, allowing the audience to continue to discuss freely, Li Kai left the canopy and slid down the trunk.

"Roar~!"

As soon as he landed, the Black Sword Tiger jumped over, roared in a low voice, and rubbed his shoulder with his huge head, as if asking for credit.

Li Kai looked down and found that the corpse of a giant vein dragonfly that had lost one of its wings was at his feet, and it was the one that attacked him before.

"Well done. ”

Li Kai made a verbal commendation to the Black Sword Tiger, and at the same time aimed the live broadcast equipment at the corpse of the giant vein dragonfly, presenting it in front of the audience, and suddenly the barrage was a crying father and scolding his mother, which cursed Li Kai a hundred times.

Although dragonflies are not terrible, many people even grabbed and played with them when they were children, including Li Kai himself, but if you zoom in dozens of times, the huge compound eyes, chewing mouthparts, and hideous appearance are simply creepy!

......

Before he knew it, it was dark, and Li Kai arranged shock protectors around the shelter, and did not make a fire, but swallowed the newt meat that was roasted at noon, but the black sword tiger had a full meal at noon, and he didn't need to eat for the time being.

Buzzing~!

The neighing sound of giant insects came from the depths of the forest, and the canopy of the trees above also sounded the sound of giant dragonflies flapping their wings from time to time, and the primeval forest of the Carboniferous Period was extremely lively.

When he woke up the next morning, Li Kai found that something was wrong, the sky was overcast and gloomy, black and oppressive, flashing lightning from time to time, followed by the dull sound of thunder.

"There's a big rainstorm brewing. Looking at the thick clouds drifting in, Li Kai couldn't help frowning slightly.

Rain is not a good thing for him, he is now in the primeval forest, there is no high place to speak of, once the rain is too heavy, the swamp will swell, flooding large areas of the ground, and then he will have nowhere to stay, not to mention the dangerous amphibians under the water.

"Looks like I'm going to hurry up and make a raft out. Li Kai thought to himself.

It seems that this rain will not be small, and it is impossible for the surging water to retreat in a short time, and climbing to the tree can only wait for death, not to mention that there are countless giant dragonflies flying above.

So after turning on the live broadcast, Li Kai began to get busy.

"As you can see, there are already dark clouds over my head, and a rainstorm is brewing, and there is a good chance that the swamp will swell and flood the ground, so I need to hurry up and make a solo raft. Li Kai explained to the audience while working.

Since there were huge fern trees growing around, it was not easy to find the materials to make the raft, and it took him a while to find suitable wood and bring it back.

"The raft needs about ten pieces of wood, and it is better that these pieces of wood should not exceed 20 centimeters in diameter, otherwise it will be difficult to float on the surface of the swamp. Li Kai arranged the timbers neatly on the ground, "The standard of a single raft is enough to accommodate one person, strong and stable, not too heavy." ”

"Okay, after the placement I need to use a diagonal snares or square snares to tie the big wood together, and then tie four small pieces of wood vertically to the big wood, everyone remember, the two ends should be tied separately, the front and the back should be tied, this will help to increase the buoyancy of the raft in the water, when the knot is fixed, the wood will not fall apart, so that the raft will be formed. ”

At the same time as Li Kai explained, he was also making the raft at a very fast speed, using ropes to hold the wood firmly together, if the raft fell apart as soon as it entered the water, it would be really ridiculous and generous.

This kind of meticulous black sword tiger naturally couldn't help, so he could only close his eyes and recuperate, and at this time, the raindrops of beans fell from the clouds and crackled on the branches and leaves.

The long-brewing rain has finally begun, and almost in the blink of an eye, it has turned into a downpour!21010