Countless lights shone through the darkness, and we slowly walked through the deep and lonely cavern. We have walked for more than ten minutes, and the orientation program shows that we are 460 meters horizontal from the entrance of the cave, and +36 meters vertically.

A group of people walked slowly about twenty meters apart, and it was a bit difficult for me to shrink my hands and feet at my request not to destroy the mountain. I command a few mechs at the end of the line, and if there is any danger, I think the rear of the team has the best chance of encountering danger.

"There's a hole up ahead." The team member who walked in front sent a message.

"Hold the hole, wait for the whole team to arrive, don't rush, the whole team accelerates." I immediately sent a message back. Everyone was also excited, and at the same time they also quickened their pace, the cave became wider and wider, and after a while, a group of people walked to a very large cave hall, the cave hall was more than twenty meters high, and the bottom was two or three hundred square meters. On one side of the cave, there are more than a dozen stone pillars tens of centimeters high emerging from the ground, and if you look closely, they look like white stalagmites, but they are not stalactites!

"Captain, isn't this a cave, it seems that this is the base of the rebels."

"Maybe!" I looked at this cave, and there were two forks in this cave, and I actually knew that it was very unlikely that I would be in the cave at the enemy base. According to intelligence, there are many instruments and communication facilities in that base, and high-precision instruments are not suitable for long-term work in a high-humidity environment. Did I find the wrong one, I suppressed the doubts in my heart, did not show it, and in the case of uncertainty, I could not break everyone's confidence.

I looked at the global system on the headset, and I couldn't contact the mecha outside the cave, it seems that the cave here is the same as the previous one, and the signal screen is very powerful. Looking at the two forks, it seems that we are going to divide our forces again. After discussing with Hans, we set off. I was on a team with Xiao Chen and Xiao Zhang, and Hans and the others formed a team, and the mechs were divided into half. At the same time, in order to maintain contact, the two sides agreed to send a mecha to the departure place every twenty minutes to report the situation of their respective teams to maintain contact, and to leave a mecha at a fork in the road.

Our team continued to move forward, this time the passage was much larger, the top of the cave was full of upside-down stalactites, and there were even patches of milky white stone buds hanging with crystal water droplets, the water droplets wanted to hug us happily, but they were coldly isolated by the heavy mecha. We hurried past without nostalgia, and soon rushed to another hole.

The hole is so big that if you don't look up, it's like a rocky beach in a canyon with a small stream flowing in it, and I don't know how many tens of thousands of years it has flowed. The creek was clear under the strong light, less than a meter deep. We looked around to find the source of the creek first, only to find that it was flowing out of a small hole in the mountain. This hole is more than three meters wide and less than one meter deep, and it is difficult for mecha to get into it, it seems that we have reached the end and there is no way. We were about to walk back, when suddenly, Xiao Chen shouted, "Captain, look. ”

The whole team looked in the direction of the light on Xiao Chen's headset, but they saw a huge pink odd-shaped stalactite. This stalactite hangs upside down on a protruding rock, the whole looks like a huge peach, and what is surprising is that its appearance is very evenly covered with longitudinal stripes, wide at the top and thin at the bottom. The top of the peach is not pointed, as if it had been bitten by someone, and the inside of the notch is also evenly covered with longitudinal stripes. The whole stone resembles a blooming flower, and has an unbelievable pink luster, stalactites have this color should contain iron in it, and stalactites like this color are too rare. Drop by drop, the sparkling stone milk falls on a prominent pink stone platform below, and the stone platform and the stalactites above it show a jade-like texture under the strong light. I believe that no sculptor of the highest level can think of such a wonderful shape, only nature. I've never seen such a peculiar stalactite, it's so beautiful.

"Okay, now is not the time to enjoy the scenery, if you want to take pictures, hurry up!"

I said it with a little regret and half-jokingly. Everyone laughed, until no one actually took pictures. The crowd walked back, and from time to time someone looked back at the stone. I silently prayed for the stone in my heart: "Brother, I don't know that it took you tens of thousands of years to grow like this, and if there is a battle, you will definitely hold on, and I will come to see you after the fight." ”

After returning to the original cave, I exchanged information with the mecha left by Hans, only to know that there are many forks in the cave on Hans's side, and after dividing the troops again, I felt that the troops were too small, so I concentrated in a cave in front of mech, and wanted to wait for the situation on our side to do the next operation. Led by the mechs of Hans's team, we traveled all the way, and there were also several caves with beautiful stalactites along the way, but they were still much different from the pink one we just saw, so everyone was not surprised. It didn't take long to reach the cave where Hans was, but he had already reached the end of the road, and there was no fork in the road. The stalactites of this cave are well developed, large and small, and if it is not for the war, you can enjoy it. Hans, the veteran, was frowning, thinking something.

"What's the matter, the scenery here isn't very good." I stepped forward and joked.

Hans smiled bitterly: "We just turned around, and we searched the forks, but we didn't find anything, what about you?" ”

"We ran into an underground river, and there was no road."

"Are we still in the wrong place?" Someone muttered.

"No, there should be a clue here." Hans shook his head and motioned for me to come with him.

We came to a small pool of stagnant water, Hans pointed to the water, there seemed to be a few hairs in the water, I picked it up and looked at it carefully: "Rabbit hair! "I'm amazed, it's not the one we ate!

"Probably what!"

Xiao Chen and Xiao Zhang walked over and looked at the rabbit fur together. Xiao Chen said: "Captain, things can't be so coincidental, since you thought of looking in this area from the rabbit, and rabbit fur was found in this cave, things should be very clear." ”

"Yes! Captain! Xiao Zhang received.

Hans and I looked at each other and nodded. I turned to look at the other team members and ordered loudly: "Everyone search this cave, see if there are any differences in the stalactites in this cave, there may be vandalism or some other special circumstances, there may be a secret passage here, and the rebel base is likely to be nearby." ”

"Captain Su, can you give some examples, we don't know much about geography, please be more detailed."

I thought about it, looking at these people, it is really difficult to make these people who don't know much about geology go to the abnormal changes of the milky stone, so I have to emphasize one point first.

"Tell me where you see stalactites turning black or dark."

"Why?" Someone asked puzzled.

"This underground cave is basically closed to the outside world, and over time it has formed a relatively independent and stable small environment, if there is no interference from external factors, stalactites will always maintain a white color, if disturbed, such as long-term light exposure, or its small environment is damaged, stalactites will change color."

"In other words, if the enemy's base is connected to here, when the base is built, the air outside is likely to come over, then it may destroy the small environment of the cave, and if the small environment is destroyed, the stalactites may change color." Hans, the veteran, was the first to react and then explained. It dawned on everyone.

A group of people walked around the cave, carefully looking at the rock walls and stalactites, much like geologists looking at geological formations. But in addition to becoming more and more familiar with the form of the milky stone, there is a shadow of a dark passage. After searching for a while, someone finally broke the peace: "The stalactites here have turned black." ”

A group of people hurriedly ran over, but saw that the stalactites in this area had indeed turned black. Everyone suddenly came to their senses, and a few lights shone back and forth on the rock wall, but they didn't even see half of the gap. After making sure that there was nothing suspicious, everyone scattered to look for other clues. It was a downhill slope, and I was still in a bit of a daze on it, but I saw Xiao Zhang stop when he walked down, and then saw him "swish" and kicked a rock on the ground.

"What are you kicking for?" I'm weirdly authentic.

"I almost broke my foot just now."

"What a stone broke your foot!" I asked.

"Stones, huh! That stone, why is it missing? Xiao Chen looked in the direction where the stone was kicked just now, and was still muttering.

"What is there to find in a stone." I'm slightly reproachful.

"But captain, the range I kicked out just now was very small, only a few meters away from the stone wall, and there were not a few stones on the ground, I couldn't have been mistaken, but now I can't find it, isn't it strange!" Xiao Chen said, looking up at me again, "Don't you often say that success or failure depends on the details?" ”

I smiled, I used to say this a lot, and now he was preaching it in turn. I walked over and patted him on the shoulder: "Good learning, praise me." "Shuang looked around, it's still a stone wall, can there be any success or failure factors here?

"You just kicked it there." I picked up a rock from the ground and tried again, maybe something would happen.

"Here!" Xiao Zhang pointed to the general direction.

"Whoosh" I threw the stone over, and the stone actually burrowed into the bosom of the stone wall under the attention of two pairs of eyes, but it still made a sound of landing.

"Ahh A pair of surprised eyes appeared on each side of the retina, and the two of them were stunned for a while, but they reacted almost at the same time and quickly crashed into the stone wall. The stone wall greeted us like a welcoming stone just now, and it didn't hurt us at all, but instead made us appear in another person's space as if by magic.

We showed up in "a" mountain pass, we looked at each other and smiled, and after a few searches, we found what we were looking for. An instrument is placed in the corner of the mountain, radiating a realistic image, which is a very high-end amphibious projector, and the projected image is enough to be realistic. Xiao Zhang stepped on it fiercely, and the illusion was finally shattered, the cave just now was behind us, and we were standing in another tunnel leading to the distance, which was more than one meter wide and more than two meters high. I have to say that Xiao Zhang's kick just now was really accurate.