Looking at the huge lake cave in front of which even the miner's lamp could not illuminate the end, Matsui Xiaoye and the bodyguards were speechless in a daze!

Judging from the situation of the dark river, this place is definitely more dangerous! What is even more helpless is that looking left and right from the outlet of the dark river, there is no way out at all! The straight stone wall rises from the water, and there is no trace of moss except for a faint dripping of seepage!

"Mr. Inoue, what should I do?", Matsui Koha asked Inoue nervously.

"Throw a grenade down!", Inoue frowned, the atmosphere here is very weird, too quiet! The silence makes people panic, dull and terrible!

As long as there is no situation in the lake, they have inflatable rubber boats that can quickly get to guò.

When a bodyguard heard this, he pulled a grenade and threw it into the lake, and after a dull sound, he saw the lake churning, and two elephant-like monsters emerged from the lake, turning their stomachs, and the blood stained the waters red!

"Sure enough, there are monsters!", Matsui Koha stepped back.

Perhaps the sound alarmed the sleeping monsters, or the two dead monsters stirred up their ferocity. The surface of the lake splashed for a while, and the sound of rushing water continued to come out, and monsters with snake heads but huge bodies with iron armor on their backs emerged from the water, roaring and swimming towards them quickly!

"Shoot, use grenades! Inoue was the first to shoot, he was holding a short sniper, he didn't need to aim, and the gun hit the monster in the head. The monster that was hit was also the size of a human head and burst open, and then sank into the lake and disappeared, leaving only the lake that was constantly reddening!

Just when more than a dozen bodyguards were steadily relieved under the leadership of Inoue and suppressed the fear in their hearts, more than a dozen four-legged monsters that looked like lizards and orangutans suddenly sprang out next to them!

"Ah, help!", Matsui Koha screamed and shot forward when he saw a monster next to him with its ugly head held high and its long tongue biting at him. But his eyes were closed, and he almost hit the bodyguard next to him.

When the two bodyguards heard this, they quickly turned their guns and guarded them in front of him, and their long tongues of fire erupted, and they immediately knocked the monsters in front of them back and kept retreating! What made them afraid was that a string of sparks came out of the bullets on the back of the monster! It was an iron-backed monster again!

Seeing this, Inoue looked at the gray fur on the monster's belly, his eyes froze, and he calmly said to everyone: "Attack its belly!"

When everyone heard this, they immediately attacked it in the stomach, and it worked! Even the ricochets formed by the attack in the wall could kill it!

Monsters crawling along the walls like geckos fall into the water one by one, injured or killed. They actually feed on these gecko-like monsters, with snake-like necks and open mouths like sharks, and their sharp teeth bite and tear each other, and they can't even stop the iron armor back!

Not only did the bodyguards feel cold in their hearts, but even Inoue's face became very strict!

The lights shone into the distance, and more wall-climbing monsters were spotted. Inoue was ruthless, let one of the bodyguards take out the prepared super compressed combustion oil and began to dump it in the lake, in order to prevent walking along the dark river, Inoue took two and threw them into the lake, and then the two bodyguards aimed and shot directly!

After two loud bangs, the flames rose into the sky, and the group quickly retreated, returning to the dark river again.

And because it is super compressed oil, it needs a huge amount of oxygen for combustion, so the air of the entire underground lake is churning rapidly, as if a ten-level hurricane has been generated! Soon a vacuum was formed near the combustion, and this oil can not only quickly consume oxygen to suffocate the animals to death, but what is more terrible is that once the splashed sparks are stained, in addition to stripping off the meat, even if they jump into the water, they cannot be annihilated, and they will be burned to death!

The screams of the animals came from inside, and the hole had just been set on fire by them, so no animals could come out at all!

If someone can watch inside, they will be able to find that even the monsters under the water can't stand the unbearable high temperature and rapid lack of oxygen environment, and once they emerge, what awaits them is to be burned alive, and there are no bones left!

Half an hour later, when the sound in the dark river lake gradually calmed down and the fire gradually disappeared. Matsui Koye and his party walked inside from the shore.

When they saw that scene, even if they were already prepared, they were still shocked: there were more than two kinds of monster corpses densely packed in the lake!

What made them gasp the most was that there was another kind of thing like an orangutan but with a vicious dog head, slender limbs, and a tail like a sharp sword was also killed, depending on the situation, although this kind of monster is the least, but the temperament is estimated to be more cunning!

A faint glow of fire was still rising from the monster's corpse, not yet completely burned!

Matsui Koha and the others quickly tested the water temperature, took out the inflatable raft and began to inflate, preparing to cross the lake!

At this time they also had sixteen people, and three inflatable rafts were just right. Matsui leafy and Inoue are in the middle. The bodyguards in front carefully brushed aside the monster corpse and swiped forward.

They had already reached the center of the lake, and no monsters were attacking, and no monsters were still alive, which made them breathe a sigh of relief!

Just as they were relaxing, suddenly, a huge body suddenly appeared from under the first kayak! Not only did they overturn the kayak at once, but they also swept the tails of the five bodyguards the moment they fell into the water, and they all smashed into the water.

Inoue reacted the fastest, looking at the huge monster close at hand, he immediately took out the poisonous darts, and between the continuous flying of his hands, dozens of large or small, round or flat hidden weapons had all been nailed to the monster!

The monster may have felt threatened, and when it raised its long neck and wanted to smash it at them, the bodyguards had already reflected, and the bullets sprayed out as if they didn't want money, not only hitting the monster's body, but also hitting its head, and for a while the giant beast was in unbearable pain, and with a roar, it crashed into the water and disappeared!

"Quick, hurry up!", Inoue's face turned black and purple, shouting loudly for the bodyguards, Matsui Koha was also desperately rowing a small oar at this time in order to save his life!

"Hurry up, everyone, there should be no monsters here!", Inoue reassured everyone.

Sure enough, there were no more monsters on the lake except for the dead corpse! When the group of people finally stepped on the upper reaches of the entrance of the dark river after more than ten minutes of high tension! Here, like the opposite side, there is also a chute with water rushing out, and pedestrians are not a problem!

Inoue has silently calculated from the time he went down to the lake until now, and found that this underground dark lake should be an oval, with the two inlets and outlets at the largest distance, a hundred meters, and smaller on both sides, about dozens of meters! )