Several hundred people split into several vehicles and headed towards the cave.
It's very deep here, several kilometers deep. There are hundreds of branch roads throughout the underground area. This vast place leads to various regions, and no one knows where the next place will be.
However, there are warning signs in each area, and some side intersections have been designated as dangerous areas, prohibiting any personnel from passing through.
Those places are basically dangerous areas that have been explored by humans, and may contain lava or other very dangerous areas.
There are still many unexplored areas because the population there is relatively small, so most of the areas have already been explored.
Today, Lu Yuan and his team went to an unexplored place where the depth measurement is said to have reached five kilometers.
Five kilometers away, this area is already very cold.
However, it is said that the temperature will rise further down, and there will be some coal seams there, but no one has been able to detect them yet. It would be even better if coal seams could be found, as they are extremely short of various fuels in this area.
The convoy continued moving forward, with the cars maintaining a speed of approximately five miles per hour.
After walking for about ten minutes, the car in front immediately issued a warning signal.
The convoy stopped abruptly, and Lu Yuan, who was sitting in the second car, got out.
The outside temperature has dropped to around minus thirty degrees Celsius, much lower than the temperature inside.
One by one, everyone, bundled up in their clothes, approached. At the front of the convoy, a person was seen holding a flashlight and searching in the distance.
"Mr. Lin, we can't get any further! We might have to walk through here!"
Lu Yuan nodded, picked up his flashlight and shone it into the distance. He saw a huge pit in front of him, about twenty meters high.
The car couldn't pass at this point, but there was a staircase-like structure made of rocks from a wall that had been built by people in the past.
By carefully holding onto the walls and stepping on the rocks, one can reach the other side of the deep pit.
There is still a little water at the bottom of the pit, but no one knows how deep it is or how to measure it.
After thinking for a moment, Lu Yuan decided to go with someone to check out what was on the other side.
"Leave the car here, let's go over first. Be careful on the way! Keep the safety ropes attached, we'll bring them back when we come back!"
Everyone nodded in agreement, and with their help, they finally managed to set up several relatively safe safety ropes, which were either placed in the crevices of the rocks or directly against the walls.
So everyone carefully stepped on the stones at the edge of the pit and slowly walked across the deep pit while holding onto the wall.
The length of the pit wasn't too bad, only about twenty meters.
But it mainly brings a great sense of fear to people, especially when facing such a bottomless abyss, about twenty meters deep with water below. Who knows what is down there? What if it's something bottomless?
However, Lu Yuan continued to lead his men forward. The pit was still very deep. After walking for a while, Lu Yuan used a detector to probe ahead and found that there were still several kilometers to go. They were exhausted. Moving in the pit was much more tiring than moving on the ground.
After walking for about half an hour, they finally saw something in front of them that made everyone very excited.
Lu Yuan picked up his flashlight and shone it ahead, discovering some mud pits in the distance.
Yes, it's a mud pit. The appearance of a mud pit means there must be mud and water there.
"Great! We've finally found some soil! Brothers, let's rush over and see if we can find any drier soil!"
Everyone excitedly grabbed their flashlights and headed forward, but they had to be very careful to cross the muddy swamp ahead.
Lu Yuan took the item and tested it first. Looking at the depth of the mud pit below, it seemed bottomless. Moreover, some places here are rare and cannot be generalized.
In order to get through this place, Lu Yuan and the others discussed it and decided to find some stones to scatter on it, and see if they could get through.
However, after trying it, they found that this method did not work. So after thinking for a while, they decided to find a wooden board. The wooden board has a larger bearing area, so they could walk on it easily.
However, no one knows how deep the mud pit is. In order to figure out a way to recruit people through this place, we need to first dig out the mud and see how much we can get.
If there's a lot of mud, then they don't need to bring these things back. Secondly, whether this mud is usable and suitable for planting still needs to be determined.
However, Lu Yuan has access to a dimensional space, so he can easily bring these things into the workshop space and test whether they are suitable for planting.
They searched for all sorts of materials nearby, made thick planks, and tried to cross the muddy swamp.
Lu Yuan then sent the mud into the dimensional space and asked Qiao Ya if it was usable.
Qiao Ya didn't stand on ceremony and directly sent these things into the laboratory.
About ten minutes later, Qiao Ya sent a message saying that the soil could be used, but the nutrient content was relatively low. They needed to use super fertilizer to plant it, otherwise the nutrients in the soil might lead to a lack of nutrition and make it impossible to grow suitable crops.
However, this is a very big problem for Lu Yuan, because they have completely broken with the military and now that they are outside the underground city, they have no resources left to take.
Having no other choice, Lu Yuan told everyone about it, and they were all stunned after hearing it.
When asked how he knew about it, Lu Yuan explained that he had seen such a thing before, after all, he was someone who came from an underground fortress.
Everyone took Lu Yuan's words to heart, and one by one they began to think of a solution with worried expressions.
In the end, everyone agreed to take the mud back first. As for the lack of nutrients, they would figure out a way later. Anyway, this mud could be used to grow something.
Then everyone carried the tools they brought from the car, bit by bit, from the stones by the roadside.
Since moving usually involves finding a prepared hose and turning on the vehicle's water pump to pump the mud into the truck bed.
Soon the front of the first car was completely filled with water.
Continue read on readnovelmtl.com
