Although there are some traces of corrosion on the raft found by Cai Junhua, the overall is quite strong, Su Peng and the three of them tried it, this raft should be able to carry the weight of three or more people.

The wood pulp found out is already a little slippery, and some fungi that have grown in the early humid environment have grown on it, but after a little processing, it is found that these wood pulp are not rotten and can still be used.

After making sure that these things were still usable, the three of them didn't say much, and pulled the raft into the underground river and jumped on it.

Liang Wei is a lady, so naturally there is no reason for the lady to work hard to row the raft, Su Peng handed over the torch in his hand to Liang Wei, and then stood on both sides of the raft with Cai Junhua to maintain balance, rowing the raft with the wood pulp in his hand.

In fact, the two of them don't need to exert much effort, because this underground river channel has its own direction, just go down the river to reach the destination, and the existence of wood pulp is to avoid the reefs and other things that may exist in the river.

The three of them took a raft and drove deeper into this underground water vein.

The current of this underground river is not turbulent, but the flow speed is not slow, and Su Peng and the others are moving forward on the water at a speed that is almost equal to that of a moderate speed bicycle.

"Brother Qi, we drifted into this cave for about three hours, and we almost arrived at the place."

Cai Junhua said to Su Peng while manipulating the wood pulp.

"Three hours? Wouldn't that be about thirty or forty kilometers of walking? ”

Su Peng estimated the current speed and said to Cai Junhua.

"It's about this distance, it's so far from the entrance of the waterfall where we came in...... Moreover, when you get to that place, you will know that the environment of that secret realm is completely different from the place we entered, and the temperature there is much higher than here. The environment is not like the primeval forest of the Great Khing'an Mountains when we came, but a bit like the rainforest of South America, and the plants are different from the outside...... According to my estimate, there should be a large natural basin, but the basin is huge and a little unusual, and the altitude is very low, it should be two or three thousand meters below sea level, but because of the unique landform and I guess it may be due to geothermal heat, it has formed a special secret land. ”

Cai Junhua said to Su Peng while paddling the raft.

"Oh? Just to those who are legendary in reality. That special hidden terrain that has the potential to keep creatures like dinosaurs alive to this day? ”

Su Peng remembered some unsolved mysteries and other programs he had watched in reality, and said casually.

"Almost, you haven't been there, you can't imagine how peculiar the ecological environment of the botanical circle and animal circle there is, probably because of the special topography of the huge basin and a lot of exotic plants, the oxygen content there should be many times richer than the outside, so some creatures that can't survive outside can also be seen there, and there are some creatures that are several times larger than usual."

Su Peng listened. Immediately full of curiosity about the secret realm described by Cai Junhua, if you can take a look there, even if there is no particularly valuable treasure, it can be regarded as a slight return to the ticket price.

When two people are talking. Liang Wei, who was holding a torch on the raft, suddenly spoke: "Shhh Don't speak, you two, do you hear anything? ”

Su Peng and Cai Junhua listened to Liang Wei's words, and immediately became alert because of the huge monster toad just now. Su Peng's luck was in his ears, and sure enough, he heard a voice that seemed to be somewhat familiar.

That sound is not to strengthen the hearing with internal force. It's not easy to hear, but after strengthening it, Su Peng can clearly hear that this should be a relatively large flying creature, constantly flapping its wings.

It's just that the sound and trajectory of the creature's flight seem to be a little special, and the sound is almost inaudible, but on the ears, you can hear that it should be a relatively large flying animal.

"What's that?"

Hearing this voice, Su Peng and Cai Junhua were also a little uneasy, because they could tell from the sound waves that this flying creature was at least half a person's size, and there were quite a few of them, if this thing was social and aggressive, it would be very difficult to deal with.

"Look! What's there? Just as Su Peng and Cai Junhua were looking for the source of the sound, Liang Wei, who had sharp eyes, suddenly shouted.

Su Peng and Cai Junhua looked in the direction pointed by Liang Wei, and saw four or five corpses hanging on the stalactites of the cave stone walls on both sides of the underground river.

Originally, the light of Liang Wei's torch couldn't shine that far, but there were some faint moss and other things growing on the stone wall of the cave, so that Su Peng and the three of them could see clearly what was hanging on the stalactites on the cave.

At this time, he was awakened by Liang Wei, and Su Peng's eyes were condensed with internal force, looking at the corpses.

After just one glance, Su Peng was suddenly a little disgusted, and saw that the skin of those corpses seemed to have just died and had not completely decayed, but the body seemed to be fermented by blisters, and it was about twice as big as ordinary people reminded.

But this is not the most numb place for the scalp, what makes people really shudder is that on four or five corpses, you can vaguely see a kind of big cyan flesh worm constantly wriggling in the corpse, those cyan flesh worms, each with a diameter of more than 20 centimeters, only one in a corpse, at this time the writhing is very powerful.

It looked like the fermented corpse was food for these flesh worms.

When Su Peng saw this scene, his back tingled for a while, and at the same time, he also reacted to what those flying large creatures he had heard before.

"Be careful! There may be giant moths here! ”

Su Peng tried his best to keep his voice low and reminded Liang Wei and Cai Junhua.

Su Peng's inference is very simple, he has at least a biological attempt, and when he sees the meat worm on the fermented corpse, he thinks that this kind of meat worm will definitely make a cocoon after the maturity period, but this is obviously not a butterfly larvae, but nine times out of ten it will become a moth.

It's the kind of moth that always gathers when the street lights are lit up at night in the summer.

Sure enough, as soon as Su Peng's words were finished, he heard those huge creatures flying in the air with irregular trajectories flying towards Su Peng and the others from somewhere in the cave.

And by the light of the torches, Su Peng and the others also saw clearly what was flying in.

There were about twenty of them, more than a meter long or more, yellow-brown in color, and a huge skeletal moth on their wings!

The moths didn't fly very loudly, but when they got closer, they could feel the sound of flapping their wings, and these moths, with their heads looking like shrunken skulls, and with a long tube-like mouthpart under their mouths, and those feet that looked like they could wrap an adult, were enough to make people tremble.

"What monster?"

Seeing these moths, Liang Wei was already a little stunned, no woman likes moths, let alone such a huge, terrifying moth?

And Cai Junhua is also discolored.

He is also a person with eyesight, and some huge and terrifying moths have appeared here, plus the corpses on the stalactites I saw before, which has shown that these moths are probably not vegetarian animals.

At this time, Su Peng and the three of them were all on the raft, and the space that could be used was too small to move at all, if all those huge killing moths flew over, the three of them might fall into the water.

At this time, the entire cave is occupied by underground water veins, once the water falls, with the temperature of the water, even if the three of them have strong internal strength, they may not dare to say that they can swim to their destination.

Not to mention, since such a ferocious and terrifying moth has appeared here, could there be something more dangerous underwater?

The terrifying group of huge murderous moths in the sky flew in the air, and it was about to fall.

"Liang Wei, throw away the torch!"

At this time, Su Peng suddenly shouted loudly.

Liang Wei listened, her body shook, she instinctively didn't want to throw away the light source in such a terrifying situation.

However, she also reacted immediately, no matter how huge these moths are, they are still moths after all, and they are phototaxis, and the torch in her hand at this time is the brightest light source in the cave, and those moths will definitely come at her.

But throwing away the torches doesn't mean that those giant terror moths won't attack them, after all, the larvae that look at those moths eat human flesh.

Throw away the torch, Su Peng and the others will have a greatly reduced vision, and I really don't know whether it is better to throw away or keep it.

"Listen to Brother Qi!"

Cai Junhua also shouted at this time, although he was also worried that there would be no light source for a while, and the terror moth would also attack him and others, but it was better than his wife being attacked by the moth.

Liang Wei listened, hesitated slightly, and finally waved his hand and threw the torch far away into the underground river behind him.

At the moment when the torch flew out of the coffin, the group of huge terrifying moths flew towards the place where the torch was thrown.

Cai Junhua's heart had already raised his throat at this time, all these terrifying moths were flying, and the three of them couldn't stop it with just the three of them.

"Don't speak!"

At this time, Su Peng whispered to Cai Junhua and Liang Wei, and at the same time, his hand quickly reached into his arms and took out a rune paper.

Almost instantly, Su Peng used his mana power to activate the rune paper in his hand.

"Whew!"

Cai Junhua and Liang Wei immediately felt that the entire raft was shrouded in a mysterious force.

Even, as they could see with the naked eye, they saw that Su Peng's three people, along with the raft, were shrouded in the phantom of a huge bluestone.

And those moths, at this time, it was as if they had suddenly lost their target, and they couldn't find Su Peng and the others.

Su Peng, who was on the raft, was relieved when he saw this scene.

The rune paper he inspired was the transfiguration paper rune "Bluestone" that he had opened from the rune paper bag in the mysterious shop before! (To be continued......)