Chapter 399: Sanctuary (1)

"Planetary archaeology" did not go as smoothly as expected, and the reconnaissance squadron stayed on an uninhabited planet for more than two months. The www.biquge.info fleet had already explored the rest of the system, leaving the reconnaissance team far behind, leaving them with only a small amount of energy supplies and a light destroyer equipped with a subspace communicator.

During the departure of the main force, the reconnaissance team will contact the main force of the fleet through the subspace communicator, and will not return to take Cheng Mingli with them until the exploration of the unmanned planet is completed or the reconnaissance on the side of the main force formation is over. Before this, everything could only rely on Cheng Mingli himself.

To make matters worse, just a month ago, the planet's rainy season arrived. Heavy rain fell throughout the tropics and temperate regions, and the rain continued unstopprisingly. Flooding, silt everywhere, and bad weather increased the exploration progress of Cheng Mingli and his party out of thin air. Many of the ruins that were still exposed to the ground before were submerged under water in just a few days, which made Cheng Mingli and them have to "look at the ocean and sigh." ”

Li Mosen, who couldn't think of a good way, suggested that Cheng Mingli shift the focus of their exploration to the intersection of temperate and cold zones on the planet, as well as the densely forested mountainous areas. From the perspective of human adaptation to nature, even the cold zone can survive tenaciously. If you're lucky, you might be able to get something unexpected in those places.

Cheng Mingli and Zhu Liheng, who have nothing to do, feel that it makes sense, the cold zone is better than everyone drenching in the rain, and the humid environment has really made everyone tired. The crowd chose a vast mountainous area in the northern hemisphere of the planet, near the boreal zone. The mountains are not steep, and in many places they are very gentle. The alluvial fan plains that accumulate in the gentle valleys and the warm winds that blow in the valleys all year round make this a good birthplace of civilization.

At this point, the rain finally stopped, and it was the only thing to celebrate in two months. But there is still no trace of any intelligent life here, not even the ruins of the city, as if there is no intelligent life here at all.

"I don't believe it, look! Find it for me! Using a detector, I was able to scan the entire mountainous area deep underground. All the people were sent out, whether it was a cave, an underground cave, or a karst cave, all of them were rummaged for me. As the saying goes, relying on the mountains eats the mountains, maybe 150,000 years ago, the intelligent life here lived in caves! Cheng Mingli was anxious and a little hysterical.

Although Li Mosen and Zhu Liheng do not agree with Cheng Mingli's way of doing things, their thinking is meritorious, at least in the eyes of the two, intelligent life living in a cave is not a big deal. There is no better place to go at the moment, and it is not bad to stay here for a while, just go out for a travel adventure, and leave immediately after the main force returns, and never stay on this primordial planet again.

Drilling caves is not an easy task, and although many caves seem to be open in all directions, many passages will be automatically interrupted after only a certain extent, so the soldiers can only go back the way they came and start over. Not to mention the fact that in the process of drilling caves, you may encounter underground rivers or lakes, underground faults that are kilometers deep vertically, or terrifying underground creatures.

In the first day or two, everyone was able to be in high spirits, but it didn't take long for them to start to get depressed, and even some people felt uncomfortable when they saw the cave. In the end, when there was really no way, the reconnaissance robots came in handy, and the kind of spider-type reconnaissance robots used for military operations were lined up in an army and marched towards the depths of the cave, some even burrowing deeper into the underground faults.

Within two days, all the caves had been explored by the robots. While some of the details may be overlooked, it's remarkable to be able to do that. The next thing is to analyze these images through semi-intelligent assistant programs to find traces of the existence of intelligent life.

Unfortunately, most of the places are just pure caves, and there is nothing special about it. Some caves were even formed in the last 100,000 years, far lower than the previous era, and were directly eliminated. However, when analyzing the last image, a shocking discovery was presented in front of Cheng Mingli.

A mural with a huge image carved into a rock face. Due to the lack of drawing skills, the images are very abstract, like the random graffiti of a child of one or two years old. Only two scenes can be clearly distinguished from the entire mural, one is a large ball flying in the sky, and the bottom of the ball is emitting white light. The other is that many people are dancing in the sky, or struggling, and the final destination of the flight is those huge round balls.

"Look, where did you find this image?" Cheng Mingli, who was still absent-minded just now, looked like his time was running out, and immediately came back to life, hurriedly pulled over the analyst and couldn't wait to ask. This mural is the most valuable piece of information the reconnaissance squadron has received in more than two months.

First of all, the ball on the mural is supposed to be a flying machine. And the civilization that can build a spherical flying machine and make it fly in the sky is at least a level 5 civilization. Because only such a civilization can build a vehicle that relies on an anti-gravity engine suspended in the planet's atmosphere. Intra-atmosphere vehicles used by civilizations below level 4 must have at least one wing to provide lift.

Second, the countless dancing human beings in the mural are flying all over the sky, indicating that at least in the era of the mural's creation, there were still intelligent life on the uninhabited planet, and these intelligent life is undoubtedly human. As for why these humans are able to fly in the sky, it may be that the ball in the sky emits a traction beam, or some other technology.

Being able to determine these two points is already very revealing, indicating that the planetary coordinate information obtained from Chen Peilin is correct, and the fifth human tribe did exist, and even developed a primitive civilization. And this kind of progress is even far more than that of the earthlings, if it hadn't been interrupted halfway, maybe the fifth tribe would have developed to the level of a fifth-level civilization or even higher.

"This drawing was found at the bottom of Underground Cave 13 in Area 217. The probe found a geological fault zone at the end of the cave, and it took two kilometers directly down to reappear a subterranean canyon. These images are supposed to have been found at the point of a fault," the analyst reported after taking a closer look at the logs.

"Keep an eye here, I'll go down and take a look" patted the analyst's shoulder vigorously, Cheng Mingli put on his helmet and ran out of the camp quickly. Two minutes later, with a slight hum of the energy engine, a small flying machine of incomparable shape rose from the ground and gradually disappeared into the sky. (To be continued.) )