I took the wolf's eye flashlight and took a closer look at the situation in the cave, which was far more terrible than we imagined, and there was a big sinkhole in the middle, so big that the wolf's eye flashlight could not find the opposite side.

Everywhere I can see, there are all cliffs, if you want to go down to the bottom of the cave, there are only two ways, the first is to hang a rope directly from the cliff, although we have equipment, but after all, it is not professional, and the essentials of climbing ropes do not understand at all.

The second way is to enter through the mouth of the old river channel on the rock wall, find the way down from the outside of the sinkhole, and then enter the sinkhole from the river near the bottom. However, the old river channel is nothing more than the collapse of the rock wall caused by the rainwater, which is extremely unstable and may be buried at any time.

Comparatively speaking, the first method has a higher safety factor, and you will not climb the rope again, at least you can stumble down.

So I snapped a glow stick and threw it off the cliff. This throw, my heart was completely cold, the previous glow stick first rolled down on the pit wall, and then fell directly into the pit, gradually the light became farther and farther away, more and more faint, until finally completely engulfed in darkness. Not to mention that we are amateur climbers, even real rock climbers see this height, coupled with the unknown darkness, it is also daunting.

I was in a low mood, completely devoid of the excitement of the first departure, and turned around with the big bag on my back and walked back, ready to climb up the slide again.

The fat brother grabbed me and asked, "What's wrong?" Forgot something? ”

I shook my head and said, "Fat brother, let's go back, we can't control it here, it's not a treasure hunt, it's just a game of life." ”

The fat brother said with a smile: "This is not like you, such a little difficulty, and I gave up before I tried." ”

I said angrily to the fat brother with a face like iron: "I'm not joking with you, you know, you may not be able to get out when you go in, and you haven't even left a last word, I can't do this." ”

The fat brother was also a little unhappy and said: "I have been preparing for such a long time, and I am unwilling to let you go back after watching it for a minute." ”

I said coldly: "If it was me before, I would definitely go down, but after what happened last time, there are still many unknown dangers in this world, I don't want to take this risk, let alone you take risks with me." Then, pointing in the direction of the cave, I said, "Look at the big worm at the door, is this a place where ordinary people can walk around?" ”

The fat brother stopped talking, and simply sat on the ground sulking.

At this point, I had already made up my mind that I would not go any further. But just as I turned around and was about to climb back, I saw a huge wall carving carved into the stone wall above the entrance of the slide, because it was too dark to pay attention to it.

I took the wolf smoke flashlight and found that a three-meter-tall human figure was carved on it, which was still the painting style of the cave man on the top of the mountain, and only the human shape could be seen in the chaos.

To the average person, it's a crappy wall carving, but to me, the figure is all too familiar. He is the one I have been seeing in my dreams for nearly twenty years, the one who led the little girl to a door to the abyss, the little girl who called me my sister with his own hands, and sent him into the door of danger, wearing a black hazmat suit.

His silhouette is even more familiar to me than I am to the fat guy, and his movements on the wall are like taking a little girl into the door and looking back at me for the last time.

Who the hell is he? Where did he send the little girl I called my sister? Is he a good guy or a bad guy? Why was he dressed so strangely? Why is his portrait here? What exactly awaits me below? Countless questions were in my brain, and the tighter and tighter I was, and I couldn't tell if I was more curious about this person or more afraid.

After a struggle, I turned my head and said to the fat guy sitting on the edge of the cliff, "Let's go from the old channel of the underground river, and it is not possible to go down here." If there is no way, you have to turn back, there is no negotiation. ”

When the fat brother heard this, he immediately stood up, and without saying a word, he took out two helmets from his bag.

We put it on according to the correct method that Fat Brother learned, hung up the lighted headlamp, and then hung the battery on the mountaineering belt. Walk towards the nearest and relatively wide river.

As I said, the river is formed after the collapse of the water flow impact, so the part on both sides of the river is full of large pieces of gravel, high and low is difficult to walk, close to the middle is relatively flat, but the support structure of the overhead stone is the most unstable, for the sake of safety, we chose the edge that is more difficult to walk, although it is a little slower, but you can reach out and touch the rock overhead, the safety factor should be higher.

The river is diagonally upward, and based on the angle of the copper pipe, we are not far from the ground, and if there is a car driving overhead, I believe we can feel the vibrations. And the further you go, the closer you should be to the ground, so that it is impossible to go down to the bottom.

I was constantly entangled in two moods, one was that I was about to come to the end, and there was no way down, so we went home. The other is extremely curious about this sinkhole, extremely curious about the strange man in black, hoping to find the way down.

About 20 meters into the river, we came to the end, the top was tightly blocked by rocks, and water continued to seep out of the cracks in the rocks, and a thick layer of limescale formed on the surface of the rocks. It must have been raining outside, and the rain had just seeped down, and it was on the surface of the rock all year round, forming a lime layer.

At this moment, a drop of rain dripped from the bottom of the pointed rock above us and fell to the ground. I didn't hear the sound of water droplets hitting the rocks, I looked down at my feet, and saw that at the location of the water droplets, there was a stone cave that meandered downward, which should have collapsed after countless years of rainwater, about the thickness of a person, and the inside was curved, and I could only see a very shallow position with a miner's lamp.

I asked the fat guy to take out the rope, and I went down to see it first, and he dragged me on it.

The fat brother took out the rope, and we put the rope through the ring behind the fast hanging on the waist, and the end with the hook hooked was hooked to the belt. I held the rope down, and the fat guy tugged at the rope on it.

When I went down, I tried to step on the roots of the trees that had grown, but not on the rocks, because I knew that any loosening of the rock would cause the rock wall here to lose its original balance and cause a certain area to collapse.

After going down cautiously for more than ten minutes, a rock the size of a watermelon suddenly slipped above my head, and the voice of the fat brother came from above: "Zhanxiao, be careful, a stone has fallen." ”

Fortunately, the stone cave was not straight, the stone hit the wall left and right, and it had broken into two pieces by the way it came to me, and there was no speed, so I fell from the side with my arm.

After more than ten minutes of landing, I finally landed, and behind me was a long natural tunnel.

I beckoned the fat brother to come down and said that there was a road ahead.

The fat brother first threw down the two backpacks, and then used two climbing spikes to fix them in the two rock crevices, put the rope through the loop on the top of the climbing spikes, and passed the rope head through the fast hanging loop around his waist, and tied a very professional weighing knot.

I was hanging a rope at this end, and the climbing spikes stuck in the rock crevices were used as fixed pulleys, and I slowly put the rope down, and I could slowly bring the fat guy down.

After about half an hour, the fat brother stumbled down, and when he heard him, he was scratched several times by the tip of the rock next to him, and his skin and flesh hurt.

When the fat brother came down and untied the knot on his waist, I pulled the rope from my rope and twisted it around, but because I used too much force, I drove the climbing nail stuck in the crack of the stone, and loosened the rock above.

Just as I retracted the rope, the cave we came down suddenly collapsed, and the rocks of all sizes rolled down, knocking my mine hat with a bang, and the fat brother and I quickly hid a few steps inside.

When the collapse was over, we were stupid, and the way was completely blocked.