Soon, everyone came to the end of the canyon. Just as Yang Hai said, the end of the canyon was a towering cliff with no other way out. A huge dark cave appeared on the ground at the bottom of the cliff. To be precise, it should be a huge pit that seemed to collapse on the ground. The entrance to the pit is very large, almost a hundred meters in diameter. At the edge of the pit is a fan-shaped, not-so-steep slope. Standing on the edge of the pit, one can smell the unpleasant fishy smell emanating from the hole. This pit must be the nest of two tyrannosaurs. For safety reasons, Ning Xiaofan did not dare to go down rashly, and immediately signaled Hou San and Yang Hai to go in and investigate first. Hou San and Yang Hai did not refuse. They held Type 95 and flashlights, and carefully went down the slope. Although the tyrannosaurus has not appeared for a long time, everyone is inevitably nervous, fearing that there are still fish that can slip through the hole. After a while, Yang Hai's voice came from Ning Xiaofan's headset: "Captain Ning, it's safe down there. There are no other creatures. Hou San and I found several passages, but we just don't know if we can get out?" "Yes?" How many passages?" Ning Xiaofan looked happy and said, "Well, don't move until we get down." After Ning Xiaofan finished speaking, he glanced at everyone and said, "Captain Yang sent back the message. It's safe down there. Let's talk about it after we go down." Ning Xiaofan immediately went down the slope. When we arrived at the bottom of the pit, we saw a huge space. The ground was relatively flat. However, the ground was covered with bloodstains. There were also many large and small skeletons and scattered bones scattered around. There was a strong stench. The smell wafts into the nose, making you nauseous. As a flashlight light approached from far away, Hou San ran over at a trot. When he got close to Ning Xiaofan, Hou San took a few breaths and said: "Brother Xiaofan, there is a passage ahead, Yang Hai is guarding there. Let's go and take a look." Ning Xiaofan nodded, indicating to Fatty and others to stay put, and he followed Hou San towards the depths of the pit. The pothole is spacious but not deep. After walking for about 200 meters, with the help of the light of a flashlight, Yang Hai could be vaguely seen. There are piles of rubble at the end of the pit. The appearance of these rocks is relatively smooth, as if they have been rubbed by something. On one side of the cave wall, there is a lot of dead grass piled on the ground. Judging from the thickness and area of ??the dead grass, it is probably where the tyrannosaurus usually rests, but the smell here is much lighter. On the cave wall at the end, there were several natural cracks two meters wide. Arriving at one of the cracks guarded by Yang Hai, Ning Xiaofan took the flashlight handed over by Hou San and shined it inside. The cracks were deep and dark, giving people A bottomless feeling. These cracks are probably the passages Yang Hai mentioned. Ning Xiaofan didn't know whether there was a way out of the passage, but with how narrow the crack was, there was no need to worry about any large creatures appearing in the crack. Just listen to Yang Hai say: "There are several passable tunnels here. I looked at the route map before, zoomed in and compared it. Entering through this tunnel is closer to the main line. Do you want to go in and explore it first? "Way?" Ning Xiaofan thought for a while and said, "There might be a fork in the road. It's not good to separate. Let's move together." After saying that, Ning Xiaofan looked at Hou San and said, "Hou San, go and call Fatty and the others." "We will go in through this passage." Hou San agreed and turned around to call Fatty and others. Without waiting long, Hou San led everyone here. Ning Xiaofan did not waste any time, motioning for everyone to follow, and then entered the passage with Yang Hai first. The entrance of the tunnel is about two meters, but after entering, it becomes narrower and narrower. At first, Ning Xiaofan and Yang Hai could walk side by side, but soon after, it could only accommodate one person, and sometimes they had to turn sideways to pass. As people continued to file deeper, the terrain in the tunnel gradually became more complicated, sometimes climbing up and sometimes going down the slope. I don¡¯t know how long they traveled, but Ning Xiaofan and his party encountered a downward slope again. This slope is extremely steep, less than one meter wide, and tilted almost at 90 degrees. The slope is also covered with a layer of loose gravel. If you step on it with a little force, large pieces of gravel will roll down. It was impossible to get off together in this kind of terrain, otherwise they would be injured by the loose gravel on the slope. Ning Xiaofan immediately arranged for everyone to get down one by one in order. Hou San is thin and weighs the lightest among everyone, so he became the first candidate to go down. Followed by Yang Hai, Fatty, Zhang Chun, Professor Zhao and others, Ning Xiaofan arranged for himself to be the last one to go. This steep slope is quite long. It took almost ten minutes before the response from Ning Xiaofan¡¯s headset that Hou San had safely reached the bottom of the steep slope came. Hou San also reminded everyone that this slope is full of loose gravel and is easy to slip, and warned everyone to be more careful. After being reminded by Hou San, everyone was very careful and followed the arrangementThey went down the slope one by one in good order. When Ning Xiaofan was the last one to get to the bottom of the steep slope, it had already taken nearly two hours. At the bottom of the steep slope, there is a cave space, which is spacious. Looking around through the flashlight, there are strange stalactites all around. There is no shortage of caves in the mysterious world of tiankeng, and stalactites are found in every cave, which is not surprising to everyone. However, coming down this extremely long slope, everyone could not help but feel a strange feeling in their hearts. They always felt that they were getting further and further away from the ground. This cave is spacious, so people don't have to follow each other in a meandering way. Instead, they gather in groups in twos and threes and continue to march forward. At this time, Li Wanting also generously held Ning Xiaofan's arm and walked side by side with him. Walk. This cave was deep and dark. After walking for more than an hour, everyone still couldn't find a way out. As time went by, everyone felt a little uneasy. If this road didn't work, they would turn back. Just thinking about it would make them dizzy. You know , that 90-degree slope is easy to get down, but it is even more difficult to climb up. Just when everyone was feeling uneasy and worried that the road was blocked, the so-called good and bad spirits, the situation that everyone was least willing to face, appeared. There was no road ahead, and what came into view was a hole without any cracks. There is a wall, and an underground river that flows slowly, but the source is unknown. No way out? Originally, everyone was thinking about finding a way out from the upstream or downstream of the underground river, but the space at the end was less than two hundred meters in diameter and was clearly visible at a glance. The underground river flowed out from under the cave wall on the right, and then passed through. Pass through this cave space, and then flow in from under the cave wall on the left. Encountering this geographical situation, everyone couldn¡¯t help but look at me and me, and they were all dumbfounded. No way, are you really going to turn back? Ning Xiaofan was a little unwilling to give up. He used a flashlight to follow the bank of the underground river to the lower reaches. There must be caves downstream, otherwise, the underground river would not be able to flow out. Reaching the end of the cave wall, Ning Xiaofan carefully shined a flashlight on the exit of the river. There was indeed a cave. The river surface was about two feet from the top of the cave. At this time, the fat man who came with Ning Xiaofan seemed to understand Ning Xiaofan's thoughts, and picked up a stone and threw it down. The stones fell into the water, and Ning Xiaofan and Fatty's eyes suddenly lit up. This underground river was not deep. "Xiao Fan, the water is not deep, I'll go down and measure it again." The fat man said, kicking off his boots excitedly, and then took off his pants. "Be careful, what if there is a piranha?" Ning Xiaofan kindly reminded him, he had not forgotten the terrifying piranha he encountered when crossing the river. Piranha? The fat man couldn't help but trembled. He couldn't take off his pants anymore. He smiled and said, "What, Fatty, my meat essence is so valuable. Why don't you try it with someone else?" Ning Xiaofan rolled his eyes when he heard this. He gave the fat man a look of disdain: "I'm telling you, fat man, your meat is expensive, but other people's meat is not expensive?" The fat man chuckled: "I don't care, I'm a coward. Anyway, I can't go on." The only person who can speak so plausibly is Fatty. Of course, extremely shameless guys like him often live a happy life. Ning Xiaofan knew that the fat man would not go into the water, so he was too lazy to persuade him, and he could not let others take the risk of going into the water. Of course, he himself was not willing to take the risk himself. In desperation, he squatted by the water and looked at him with a flashlight. Shine your light into the water to see if there are any aquatic organisms in the water? After some illumination, there seemed to be no aquatic life in this dark river. However, the brightness of this flashlight was limited and could not reach the bottom of the water. Ning Xiaofan was still a little unsure. "Xiaofan, have you discovered anything?" the fat man asked. "I haven't found it yet." "Well, just using a flashlight to shine it won't do much, so you have to find another way." "What way?" The fat man didn't respond. He stretched out his hand and put it on Ning Xiaofan's face politely. Fumbling around in his pockets. "Hey, Yu, what are you Yu?" Ning Xiaofan quickly blocked his dirty hands. "Looking for meat. You should have some big pheasant meat left over there, right? Throw a piece of it in and you will know if there are piranhas or something in the water." This is a way. Ning Xiaofan felt happy, but his eyes were crossed. The fat man glanced at him: "Go, go, don't you have any left for yourself? I remember that you hid a lot of private food." The fat man smiled without shame: "No, Fatty, I have a big appetite, so I can't get enough of that private food." The food has already been eaten. Hurry up. If you don¡¯t bring out the meat, the fat man will have to ask your beautiful landlady for it.¡± With the fat man¡¯s shamelessness, he could really ask Li Wanting for moa meat. Ning Xiaofan glared at him angrily. Reluctantly, he took out a piece of moa meat and was about to throw it into the water when the fat man grabbed it and threw it into the water.After that, he took a bite first, then threw the remaining half into the water, saying vaguely: "Don't waste it, half a piece is enough." The second update is here.