"Let's go!" Seeing Zhao Tiezhu's face uncertain there. Li Ling'er was afraid that Zhao Tiezhu would regret it, so he directly took Zhao Tiezhu's hand and walked towards the depths of the cave.

Zhao Tiezhu thought for a while, it was only a hundred meters, and nothing should happen, so he put his mind at ease, walked a few steps, walked in front of Li Ling'er, and then took out the copycat mobile phone with a flashlight from his pocket and turned on the flashlight.

The light of the flashlight was still very powerful, and after walking about twenty meters, the surroundings were obviously darkened, Zhao Tiezhu suddenly stopped, and then took out a bundle of string from the pocket of his jacket.

"What is this for?" Li Linger asked curiously.

"It's a lifesaver at a critical moment." Zhao Tiezhu pulled the rope apart, then tied it to a huge stone pillar, and then tied one end of the rope around his waist, and then said, "Okay, let's go." ”

"Wow, it looks so professional, but, Brother Tiezhu, is this thing reliable?" Li Ling'er pulled the rope and asked.

"The two of us won't break when we hang it, this is a professional tool." Zhao Tiezhu said detrimentally and continued to walk into the depths of the cave.

The opening of this cave is very large, but after walking inside, the road inside is very narrow, and there is a tendency to get narrower and narrower, and after walking about fifty meters, the road is small enough for two people to walk side by side.

"It's already about fifty meters, and there is no mechanism or anything, and another fifty meters, let's retreat." Zhao Tiezhu said, turned a corner in front of him, after turning this corner, a huge pothole suddenly appeared in front of him, the whole pothole is very big, so big that Zhao Tiezhu can't estimate how big, mainly because Zhao Tiezhu has a flashlight in his hand, and there is no other light source.

"Looks like there's not much to see." Zhao Tiezhu took Li Linger's hand and said.

"Oh, it's a shame that people thought there would be some treasure or adventure." Li Ling'er said depressedly, took a few steps forward, and walked into this hole, and Zhao Tiezhu also followed behind him.

"Wow, that's big!" Li Ling'er followed the light of Zhao Tiezhu's flashlight to look at the top of the pit, which was about more than ten meters high, which was still very rare in a cave.

At the top of the pit is a naturally formed bell stone, and about a hundred meters in front of this pothole, there are several small holes, and no one knows where these small holes can lead.

"If this place is developed, it would be very good!" Zhao Tiezhu looked at the bell stones, the history of this cave must be very long, otherwise there would not be such a long bell stone.

"Mmmm, look here, there's sand!" Li Ling'er squatted down, grabbed it on the ground, and then handed his hand to Zhao Tiezhu.

"Sand?" Zhao Tiezhu was stunned for a moment, it stands to reason that there are either stones or dirt in this kind of pothole, and there is no sand at all, where did this sand come from?

At this moment, there was a rumbling sound like thunder not far away, and Li Ling'er said in surprise, "What about rain and thunder in winter?" ”

"I'm grass!" Zhao Tiezhu's face was all over again, and he finally understood why there was sand in this place!

"Fuck this is an underground river!" Zhao Tiezhu shouted, rushed to Li Ling'er's side in a few steps and picked Li Ling'er up by the waist, but the thunderous rumbling sound was still far away a second ago, but a second later, it had already echoed in the entire hole.

"Daddy!" Zhao Tiezhu helplessly looked at the huge torrent less than ten meters in front of him, and directly hugged Li Ling'er tightly in his arms, and then turned around, turning his back towards the torrent, accompanied by Li Ling'er's exclamation, Zhao Tiezhu and Li Ling'er were directly swept away by this huge torrent.

In less than half a minute, the torrent receded, and the pit returned to the way it was before Zhao Tiezhu came just now, but Zhao Tiezhu and Li Ling'er had disappeared.

Instead, turn your gaze to the second peak.

Near the peak, Sun Lei and the others also stopped, because in front of their eyes, a cave also appeared.

The outside of this cave looked much smaller than Zhao Tiezhu's cave, and Yamamoto Fifty-seven took the map and looked at it carefully, then looked at this cave, and exclaimed in surprise, "This is here!" ”

"Then let's go inside." Li Xu took the lead in the forefront, but Sun Lei shouted, "Wait a minute." ”

"How?" Li Xu asked dissatisfiedly.

"No one knows what the situation is in the cave, and the preservation work still has to be done!" Sun Lei said as he took out some bottles and cans from his bag, which contained oxygen cylinders, helmets or something, anyway, all kinds of tools were readily available.

After the group had armed themselves, they walked into the cave together.

"There are many branches in this cave, so remember to follow me when the time comes!" Yamamoto Fifty-seven instructed, "Also, now that it's raining heavily, be careful of the underground river." ”

"Yes." Li Xu nodded, while Michiko looked at her mobile phone in embarrassment, entered the cave, and there was no signal again!

"I don't know what I'm doing, master?" Michiko thought anxiously.

Because Sun Lei and others had the instructions of the map, they walked very fast in this cave, and occasionally encountered some forks in the road, and they all followed the instructions of Yamamoto Fifty-seven, and walked for about half an hour, and several people had gone deep into the cave.

And at this time, in another place.

"Ahem, ahem."

In a dark cavern, a cough suddenly sounded, followed by another.

One male voice, one female voice.

"Brother Tiezhu, where is this!" The woman's voice trembled slightly.

Then, a light lit up violently.

"This phone is really good." Zhao Tiezhu took the copycat machine that he was said to be waterproof when he bought it, and said with emotion, then looked at Li Ling'er and asked, "You're not hurt, are you?" ”

"No, I just choked on a few mouthfuls of water." Li Ling'er coughed a few times and said, "Brother Tiezhu, look at where we are now." ”

"How do I know where?" Zhao Tiezhu looked around, not far in front of him, there was a huge pool, and according to what happened just now, he was probably washed here by the water of the underground river!

Zhao Tiezhu couldn't help but be glad that his body was different from ordinary people, the violent water flow just now, if ordinary people were directly hit, they would definitely be knocked unconscious, although he was in pain, but he didn't faint after all, otherwise he could only drown with Li Ling'er.