The glazing of rocks usually occurs after the volcanic eruption lava flow reacts with rocks, and requires very high temperatures. Severe explosions and burning can also lead to such phenomena. Wang Sichuan’s inference is basically correct, but whether it is explosion or burning remains to be verified. Wang Sichuan’s first feeling is the explosion, because the Japanese might want to close the cave before leaving. The general military’s approach is to blast the mountain. However, if the yellow explosives at that time were to achieve this effect, the amount of use would definitely be quite large. After the explosion, half of the mountain might be lifted off. I personally think it was a long-term burn, because if a big explosion occurred here, the cave would definitely not be like this now.

If it was burned, the hole should have been burned for more than forty hours. I don’t know what they were burning at that time.

We wade through the water and walked in the cave twice. The depth of the river was not evenly average. One foot deep and the other was shallow, with pebbles at the bottom. When we shine the flashlight, we could see many small fish. If it were in the south, it would be a good place to escape the summer heat. Unfortunately, it was too cold in the north, and it was a bit ruddy in rubber shoes.

The people above were hung down one by one, and I was familiar with the people from other groups, and they handed cigarettes to each other and discussed the situation in the hole. The specific work was done by the engineers, so we didn't have to worry about it. The things were moved to the raft little by little.

During this process, we also talked about the Japanese soldiers. In those years, there were often rumors that they had captured Japanese soldiers who had not yet retreated in the mountains, and some of them were already like savages. They didn't know the end of World War II, and they thought they were still fighting, and they didn't know if there was any in this cave. If such a thing really happened, it would be interesting.

Two hours later, all the staff got down and all the eight rafts were filled with air and floated on the water.

Everyone was a little nervous. Some people kept talking nervously, and the whole hole was very noisy. At this time, the colonel was also hung down. He changed into the field clothes. Only then did I recognize him. This person turned out to be the instructor during my military training, but obviously he could no longer recognize me.

The colonel mobilized us, and we were generally concerned about whether we had the confidence to complete the task or not. We all said reflexively that we had it! Then he announced our departure, and we each took deep breaths, put on raincoats, and got on a raft, even if we were about to set off.

According to the analysis on the geological imaging photos, the plane is located in a section of this underground river. However, the vertical distance we explored is not equal to the actual distance. The river channel winds underground, and its length is unknown, but it must be far longer than 1,200 meters.

We were in the second group. After the first group of two rafts were pushed down the cave downstream for a minute, we also set off. The engineers in front turned on the boat lights to open the way for us, while we held the oars and supported them on both sides to prevent the raft from hitting the cave wall.

Soon, the sounds around gathered over the holes due to the shrinkage of the holes, and the light also shrank around the raft. At this time, using a flashlight to shine in the water, you can find that the water is already quite deep. This is the characteristic of the structural hole. The change in the hole momentum is very abrupt and huge.

The hole is not wide, and it is only about ten meters away from here, but it is quite high, and the cracks upwards cannot be seen, making people feel like they are in a narrow canyon. When the flashlight shines, you can also see the roots of the plants.

The scenery like this is still spectacular, and we were all stunned for a moment. Chen Luohu took out his camera and shot two photos with a flash of magnesium.

After drifting in front of less than 30 meters, a fork hole appeared. After we gathered here, we floated into a fork hole separately, and then we really entered a tense place. Cave exploration, a 50-person exploration team and a five-person exploration team felt completely different.

We throw away a few radio floats so that when there are problems ahead, the signal will distort and we can warn in advance.

However, the water flow was very slow. As we watched the float with light bulb slowly float to the front, we followed with confidence.

The dangers of cave exploration are often exaggerated in novels. In fact, as long as you follow the procedures and be cautious, cave exploration is safer. The main danger is that the rocks are unstable, and the cave collapses after people enter, causing casualties. At this time, all the engineers in front are holding the guns in their hands tightly, which makes us feel very funny.

However, without the experience we have accumulated over the years, it is difficult to avoid being nervous when we see the darkness in front of the cave, which is understandable.

In the first four hours, everything went smoothly. We quickly drifted in more than 2,000 meters. The water began to rise, and a short waterfall like turning and steps appeared. Because there were large piles of rocks under the water here, some things stuck in the cracks of stones began to appear around them, all of which were left by the Japanese people back then, such as wooden boxes and cans with holes that were rusted, and some vague numbers were painted on them. We couldn't understand Japanese and didn't know what it meant.

Just as our attention was attracted by these things, we encountered the first obstacle. The boat in front suddenly stopped and seemed to be caught by something. Then our boat hit and the person next to the boat almost fell into the water. Then our boat fell along the water flow and squeezed with them.

We all felt strange. On the water, we could not see anything, but the two boats stopped here. Is there something under the water?

We stirred the paddle in the water, and we certainly encountered an obstacle. We picked it up with force and actually picked up a ball of barbed wire from the water.

"Damn little Japanese, he actually made a secret stake for me." The deputy squad leader cursed, and asked the two engineers to go into the water and cut it.

The two soldiers then took off their clothes and jumped into the water. They bit the flashlight and dived into the bottom of the water. The water splashed up and it made us shiver. We were so cold that we all shivered. I really admired their courage to jump as soon as they said.
Chapter completed!