"How can it be?"

Long Feijun lost his voice and said.

The hit rate of high-altitude bombing has always been one of the most difficult problems to solve in war.

No matter how violent a volcanic eruption is, the size of the crater is quite limited.

Observed from a synchronous orbit outside the atmosphere, no matter how large the crater is, it is smaller than the tip of a pin.

Pushing a meteorite down from a synchronous orbit, the probability of hitting an erupting volcanic crater accurately is not much higher than shooting a cotton thread from a hundred meters away and penetrating the eye of an embroidery needle.

Unless it is a 100% accurate hit, there will not be only one sinkhole left on the ground, but two overlapping, gourd-shaped chain craters.

"It's possible that it may not be a volcano crater, but it may be some kind of giant cannon launched from the ground out of the atmosphere and specially used to attack synchronous orbit targets, just like the missile silos on the earth." Meng Chao murmured.

road.

He closed his eyes.

A picture emerged in my mind.

A long time ago, long before carbon-based intelligent life sprouted on Earth, an earth-shattering war broke out in another world.

The raging flames on the ground were like a volcano erupting, but a hundred times more violent, converging into huge red-red light pillars that penetrated the sky and pierced the stars.

Under the stars, in the synchronous orbit, countless meteorites fell like super giant hailstones driven by mysterious forces, destroying the "giant cannons" that output light beams one after another.

The air waves tear apart the space, the high temperature melts the earth, and the entire alien world is a literal hell.

In the Hell of Fire, there are countless beings more powerful than gods and demons from other worlds, wielding gleaming weapons superimposed with countless heavy spiritual magnetic fields, and making war cries that resound through the sky.

Similar scenes would occasionally emerge from the depths of Meng Chao's mind when he was practicing deep in the ancient ruins.

However, these pictures are more fragmented than the memories of previous lives.

Just like waking up in the morning and having a dream after peeing, all the details disappear with the chill.

Until now, seeing the tiankeng makes people feel like they have seen each other before.

"This is most likely an ancient battlefield."

Meng Chao said: "Meteorites will not appear in low-Earth orbit for no reason. Someone must have captured it from outer space and used it as a weapon to smash it down. The purpose of the attacker is just to blast this giant cannon that is similar to an active volcano, so that's why

Control the speed of the meteorite, otherwise, if the entire continent is destroyed, even victory will be meaningless.

"It just so happens that we found a lot of traces of war in the ancient ruins. It can be reasonably inferred that a super war that destroyed the ancient civilization broke out in another world a long time ago. The time travel of the people on earth is not unrelated to this war.

.

"No matter how difficult it is to push down a meteorite from a synchronous orbit and accurately hit the crater or the muzzle of a giant cannon, it is still more difficult than allowing an earth city and all its citizens to travel to an alien world hundreds of millions of light years away. Ancient civilizations have the ability

make it happen.

"If the sinkholes and ancient ruins in front of us all originated from the same war in the same era, then everything would make sense."

Long Feijun followed the "God of War" Lei Zongchao and also entered the ancient ruins to practice.

Meng Chao's words made him tremble, and he said solemnly: "Are you saying that this sinkhole, like the ancient ruins, is very likely to contain a large number of secrets and...power of the ancient civilization?"

"This is an obvious thing. Otherwise, where would the monster civilization come from?"

Meng Chao said, "It is impossible for monsters that have absorbed psychic energy and the enlightenment of human civilization to develop a monster civilization with such strong organizational power and the ability to organize large-scale beast tides to attack human cities in just a few decades."

, it is even less possible to breed a super alien beast like 'Whirlpool' that understands the weaknesses of human nature.

"Besides, the biochemical modulation technology of monster civilization is ten times stronger than that of human civilization. Even the doomsday beasts that destroy the world cannot learn the full set of technologies by themselves and create all the necessary biochemical modulation without a teacher.

Equipment?

"The monster civilization must have been enlightened by the ancient civilization, just like the human civilization that traveled to other worlds also received help from the ancient civilization.

"Human civilization and monster civilization are just two fruits grown on the same vine. Therefore, we can use monster materials to cultivate, and monsters can also become stronger and stronger by devouring strong humans."

Long Feijun narrowed his eyes.

What Meng Chao said is not incomprehensible.

In fact, regarding the origin of monster civilization, there has long been an "ancient civilization hint theory", but now more evidence has been found.

If this is the case, the danger level of exploring the sinkhole will be doubled again.

This ultimate lair of monster civilization that contains ancient mysteries will never be easily revealed by humans.

But the higher the risk, the greater the reward. As long as the people on earth can completely conquer the Tiankeng, it is possible to obtain more ancient mysteries.

Including incredible biochemical technology, which can give strong humans the power of doomsday beasts.

"Continue to search, look for traces left by previous exploration teams, and collect and analyze more samples."

Thinking of this, Long Feijun issued an order.

After a pause, he added, "Don't rush down until you fully understand the situation."

This order was transmitted to the ten exploration teams through the tactical data link.

A very strange thing is that the closer you get to the tiankeng, the weaker the spiritual magnetic interference becomes and the signal becomes better and better.

The ten exploration teams can even open public channels for real-time communication and transmission of images and audio.

It's like the mastermind behind the monster civilization is not afraid of them contacting each other.

They took pictures of the sinkhole from different angles.

We even clearly captured the area near the bottom of the pit.

However, most of the rock walls and pit bottoms are covered by green tide.

If there really is an entrance to the ultimate lair of monster civilization, it is also hidden under the green tide, and it is impossible for humans to directly mark the coordinates for long-range bombing.

Moreover, no human towns or any signs of human activities were seen.

I really don’t know the circumstances under which the “Piranha” team saw the human town.

After continuing to explore for half an hour, the exploration team of Meng Chao and Long Feijun discovered the camp left by Lu Siya's team.

This is where Lu Siya and the others assembled the hoist, built a temporary lifting platform, and set up fire points.

It's naturally empty here, not even a single human hair on it.

But what is very strange is that there is no trace of the battle anywhere.

The fire points around the temporary camp, all the fully automated heavy machine guns and flamethrowers, did not fire a single bullet or spit out a wisp of flame.

None of the mines and anti-monster grenades hidden outside the firepower point were triggered.

The winches are all good. Pull down the joystick and the lifting platform will slowly rise with a slight noise. Naturally, there is nothing on it.

Meng Chao wandered around the camp and found two half-eaten portions of self-heating food on the ground.

Although the food was covered with a layer of colorful mold, the food was generally intact. It was gently put down by someone rather than being hit hard by an external force and thrown away.

this point is very important.

The members of Lu Siya's team are all elites of the ninth special investigation team of the Alien Beast Investigation Bureau.

Unless they confirm that there is no danger within a few miles, they cannot sit down to eat and replenish their strength.

The meal was only half eaten. What situation could cause them to put down their lunch boxes and then mysteriously disappear?

If it was an enemy attack, with so many living people, if they struggled a few times, they would have left a lot of traces on the ground, rocks, and equipment, right?

And since there is a time to "put down the lunch box gently", why is there no time to sound the alarm and leave clues?

Besides, besides Lysiya and the others, there were several exploration teams at that time.

Just now, Ye Xiaoxing had personally inspected the temporary camp set up by another team under Lu Siya at a commanding height a few kilometers away.

The situation is like a retreat.

All the equipment was intact, not even half of the mines were triggered, but the humans disappeared without a trace.

"Senior Brother Long, do you think we should go down?"

Meng Chao swallowed hard and asked in a low voice as he looked at the lifting platform that was dragged to the edge of the sinkhole by a winch and swaying in the strong wind like a swing in disrepair.

"Although our mission is to explore the truth about the sinkhole, I have to say-"

Long Feijun also swallowed and gritted his teeth and said, "Before all the 'Bread Crabs' and 'Peregrine Falcons' are released, I will never send anyone down to die."

"It makes sense. We also have 'Bread Crab' and 'Peregrine Falcon'. The spiritual magnetic interference here is not strong. Maybe..."

Meng Chao only finished half of what he said.

Thirty-six thousand hairs on my back suddenly stood up like ice needles.

The calf muscles exploded, and he rolled to the right like a conditioned reflex.

"Whoosh!"

A vine covered with thorns and coated with mucus brushed past his ear, compressing the air and irritating the eardrums, as if it made a howling sound like a ghost.

His shoulder was struck by a thorn, and before he could gather his spiritual energy to resist, the wound suddenly became red, swollen, and became unbearably numb.

Before Meng Chao turned around, he saw the geological expert dancing and flying past him, falling towards the depths of the sinkhole.

Meng Chao had quick eyesight and quick hands, and the chain blade wrapped around the geologist's ankle and pulled him back.

More screams came from behind.

Meng Chao turned around suddenly and saw a horrifying scene.

Countless vines with thorns and mucus, like giant pythons emerging from the ground, tightly wrapped around the exploration team members, dragged them up into the air, and tossed them around.

The thorns and mucus seem to be extremely corrosive and anesthetic. They can curb the surge of spiritual energy in the human body and paralyze the muscles and central nervous system, making even the strongest in the heaven realm and above like fish on a chopping board without fighting back.

Power.

The source of these vines extends all the way to the depths of the jungle, covering the green tide, towering into the clouds, and swaying on the green giant.

"UHV transmission tower!"

Meng Chao's pupils shrank into two pinpoints, but the rest of his eyeballs were filled with green.
Chapter completed!