Yang Jing grabbed the vines and climbed down quickly. He soon came to the stone door. Only then did Yang Jing realize that the stone door, which had been motionless, was now slowly sinking. At the same time, Yang Jing also found that about one and a half meters below the stone door, a large amount of fine sand was constantly leaking out of a hole and pouring directly down the cliff.
After a little thought, Yang Jing figured out the mechanism of the door.
When this stone gate was first set up, the bottom should have been empty. Then a large amount of fine sand was filled in the hollow space below, and then the gate was placed on the fine sand.
As long as the fine sand does not leak out, it will always hold up the door and prevent it from sinking. But once the fine sand starts to leak out from the bottom, the fine sand will sink, and the heavy stone door will sink with it, eventually revealing the entire passage.
The mechanism that controls the leakage of fine sand is the stone 15 meters above! As long as the stone is pushed in, the leakage hole of fine sand below will be opened.
After figuring out the structure of the entire mechanism, Yang Jin couldn't help but sigh that the guy who designed this stone door was really smart.
As the fine sand continued to pour out, the stone gate dropped more and more. However, when the stone gate dropped to about one meter, it stopped falling. Yang Jing looked down and saw that the hole was no longer pouring fine sand.
Once you think about this situation, you will know what is going on. These fine sands have been in here for who knows how many years. The upper part is estimated to have been compacted a long time ago. The uncompacted sand below has flowed out. The compacted sand cannot flow, so the stone gate naturally cannot sink.
But it doesn’t matter. The stone door has been opened about a meter and a half, so I can get in.
Yang Jing did not rush to get in, but put his face close to the opening. When he clearly felt that the cool breeze gushing out from the opening did not have any rotten smell, he boldly got in.
It is usually very dangerous to enter a cave like this that has been sealed for who knows how many years. But it is obvious that this cave where the treasure is buried is not a completely sealed cave. There should be ventilation holes in the cave, otherwise there will be no air convection.
But even so, when Yang Jing got in, he took out a set of miniature oxygen tanks from the space, as well as a miner's hat with a spotlight on the forehead and a gas mask.
After getting dressed, Yang Jing turned on the spotlight on the miner's helmet and held a high-intensity flashlight in his hand. At the same time, he took out the M4 combat shotgun with bullets and slung it over his body. Holding the high-intensity flashlight in one hand and the combat shotgun in the other, he slowly began to walk towards the depths of the dark passage.
This passage was obviously formed naturally, and was very wide, more than two meters high and two meters wide. It was narrow at the entrance, and judging from the narrowness of the entrance, this section should have been artificially excavated.
Yang Jing walked carefully along the passage diagonally downward. After walking for about three or four minutes, and estimated to have walked downward for about fifty or sixty meters, the view in front of him suddenly became clear, and a huge hole appeared in front of Yang Jing.
This hole is seven or eight meters high, more than forty meters long at the longest point, and about twenty meters wide at the narrowest point. The exit of this passage is located about five meters above the ground in the hole.
Standing in this place, Yang Jing could clearly feel the cool breeze constantly rushing from this huge hole to the passage where he was standing. Obviously, this hole was not sealed, and there should be other exits or ventilation holes.
Standing at the edge of the passage, Yang Jing looked down carefully and found that there were some hollows carved out on the rock wall below the entrance of the passage. Obviously, these hollows were used for going up and down.
Putting the flashlight in his pocket and the combat shotgun back into the space, Yang Jing carefully climbed down along the depressions. When he stood on the hollow ground, Yang Jing felt that the hole was indeed very large.
This is not a cave in the ordinary sense, because this mountain is not limestone, but solid granite. In other words, this cavity should have been formed during the orogeny. Perhaps when the mountain was still in a soft stage, the gas rushing up from the ground rushed out such a huge cavity in the mountain.
Not far from the passage where he came down, there was a wider passage extending diagonally downward. Yang Jing stood at the entrance of the passage and tried it, and found that there was no convection air there, but it was obvious that this wide passage should be another exit of the cave.
Yang Jing was wearing a gas mask and carrying an oxygen tank with him, so he walked down this wider passage without hesitation.
After walking for seven or eight minutes, Yang Jing estimated that he had walked more than 200 meters and should have almost reached the outside, but the road ahead was completely blocked by a pile of rocks.
After walking around, Yang Jing had a rough idea in his mind. Obviously, the huge hole just now should be located on the hillside of this lonely mountain, roughly where the "wotou" and "qiegao" are connected, and should be slightly southeast. In other words, about one-tenth of the huge "qiegao" on the top of the mountain is located on this hole.
As for this blocked passage, it should be the original entrance to the hole, but when the hole was used to hold the treasure, the entrance was completely blocked. The guy who buried the treasure opened an exit from the passage above and set up a heavy stone door at the exit...
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