After so many anomalous events, for the residents of City D, they simply pray that nothing will go wrong.

This time, even a frivolous person like Zhao Xindong muttered to himself in his heart, don't have any demon moths in this sinkhole.

It's just that sometimes things always backfire, and often the more undesirable things are, the more likely they are to happen.

For example, Zhao Xindong and the others hoped that there would be no more trouble, but the actual situation far exceeded their estimates.

From the outside, this sinkhole can only see a huge steep slope, like a huge "cauldron", and the center of the "cauldron" is a large pothole, the whole pothole is like a shaft, photographed by a drone in the air, the photo of the cave is pitch black underneath.

After laser measurements, the result is that the depth should be about three or four hundred meters.

Zhao Xindong, who was wearing protective clothing, took out the photos taken, and several photos were taken continuously from above from a bird's-eye perspective.

In the photo, there is a huge hole in the center of the cauldron, like a pitch-black vent, and you can see the rock formations inside, but there is not much information about it.

There are not many intelligence clues in the preliminary understanding, but the huge sinkhole that appeared unexpectedly naturally attracted the attention of Shangfeng, so there was the action of Zhao Xindong and others. The group of them had come here to investigate the situation of the pothole further.

The investigation team was only the "vanguard", and its entourage was mainly composed of military personnel, but also included messengers, engineers, and several accompanying scholars, including geologists, biologists, and a well-known scholar in biochemistry and virology.

"Under normal circumstances, the vast majority of sinkholes are ......formed after the ground collapses due to the soft geological structure of the sinkhole, coupled with the continuous erosion of solid bedrock by underground water veins."

A geologist in military uniform who accompanied him carefully observed the nearby terrain and reached out to touch the soil next to him. This is rare in cities, but in severe cases, it can become a disaster, with a sinkhole in a densely populated residential area swallowing up buildings on the ground, and if on the road, cars can fall into deep pits, resulting in injuries and deaths.

Guatemala City, the capital of Guatemala, has seen a 60-meter-deep and 30-meter-diameter hole in the ground, which even caused a three-story building to fall into it. However, that can really only be regarded as a "hole in the ground", and it cannot be compared with the current sinkhole of three or four hundred meters.

They checked the local archives and found that the original site of the sinkhole, which had a flat above it, had disappeared without a sound.

"However, after looking at the geological survey data in the area, examining the nearby soil, and analyzing the geological features, we felt that the occurrence of sinkholes was unlikely......

Of course, geological analysis and investigation has always been a difficult point, and it is still very difficult with human technology, and to carry out underground research, drilling and special instruments are required. For example, common geological radars, various drilling tools, image analysis instruments using high-power electromagnetic detection.

"The underground environment is quite complex, and without geological radar or high-density resistivity meters, any speculation is unreliable."

The need for instruments was not excessive, and it didn't take long for the helicopter to send over some of the required equipment.

"This hole...... Do you want to send someone down to take a look? ”

"No, this hole may be dangerous, just to be safe, let drones and geobots go down and take a look."

To investigate this abyssal cave that suddenly appeared, it is natural that all parties have to contribute. Zhao Xindong and others have applied to use aerial survey systems and satellites to obtain the necessary radar data, and only when more resources are available for the geology of the area can they analyze the details.

At present, they have obtained the latest drone loaded with synthetic radar telemetry data, as well as a professional geological exploration robot, which is basically equivalent to a strengthened lunar rover, and intends to carry out more direct exploration of the "deep pit" after being put into it.

Next, Zhao Xindong and others and a few engineers tried to use ropes to put the geological exploration robot at the bottom of the bottom of the pit.

This action alone took about an hour, and from their point of view, the bottom of the vertical pit of three or four hundred meters was completely dark, and the long rope was carefully lowered from the air, placing the body of the geological exploration robot at the bottom of the pit.

The body of this exploration robot is made of lightweight composite metal material, crawler structure, attached to the acquisition of mechanical limbs, equipped with multiple modules, and can be monitored in real time through wireless video.

Various sensors built into the body can collect and transmit data such as temperature, space size, and gas concentration.

As the robot landed on the crater floor, the searchlight flickered and lit up, shooting a bright light forward.

Under the illumination of the light, Zhao Xindong and the others could finally see the "scene" at the bottom of the pit through the video.

"Oh my God! What's going on?! ”

The location where the geological survey robot falls is like an island, and beyond the island, there is a black "sea", but no matter how you look at it, this is not an ordinary "black sea", it is a viscous and disgusting black liquid, as far as the eye can see, it is all this kind of "thing" that is different from the conventional.

Rustle! Countless black ripples rippled like ripples on the water, spreading in circles, and countless inexplicable and strange sounds of rustling and shutting came out from the robot's collector.

It was a sound from the black ocean, in fact, Zhao Xindong and the others had already discovered that it was not an ocean at all, but a huge ocean entrenched, entangled, and gathered together by countless wriggling black snakes. This huge black ocean occupies the bottom of the entire cavern, and the moment the geological survey robot turns on the light, the worm-like things in the black sea quickly disperse like a photophobia.

"Is this—Is this a creature?"

"Nope! It shouldn't be like that. ”

The biologist pushed his glasses on the bridge of his nose, and he stared intently at the corner of the video.

"This is not the same as the 'that' that appeared in the 'Ghost Old Sea', it is a magical intelligent plant!"

After the Ghost Laohai incident, there has been a considerable degree of research and analysis of all kinds of excavated samples, and the technicians on the front line of the incident, especially those related to their own fields, naturally cannot be ignorant.

The biologist didn't think it was an "animal" or a worm, but rather a sapient plant, just like the one in the old sea.