Lulu whispered through the communicator connected to everyone, "Everyone stand by here, let the big dogs investigate the hole in the waterhole first." ”

Through the three big dogs' built-in night vision cameras, everyone used the built-in monitor of the helmet to see them walking along the slightly diagonal downward hole for about 1.5 kilometers to a fork in the road.

The big dogs then drilled into the small hole on the right and continued to walk for more than 300 meters until they came to a "crossroads".

After walking to the left for about 30 meters, a hole with a diameter of more than one meter appeared above the cave wall, and if it were not for the map, it would not be possible to see that there was such a passage above the head if you walked forward.

The mechanical limbs of the big dogs automatically lengthened at this time, supporting the inner wall of the vertical upward passage above their heads, and after climbing up more than ten meters, they came to a three-way intersection.

After walking more than 500 meters along the middle intersection, I finally came to a big hole.

I saw that this cave is about 100 meters square, about 20 meters high, there is a circular pool of 20 or 30 meters wide in the center of the hole, and there are many white stone stalactites of different sizes and lengths on the top of the cave dripping down.

Lulu commanded at this point, "Let the big dogs use the life detector to probe above." ”

After the three big dogs turned on the life detector at the same time, the data fed back showed that above the roof of the cave, there were a large number of signs of biological activity, mostly half a meter to one meter high.

When everyone saw the data displayed in front of them, they whispered all kinds of admiration or celebration.

Lulu continued, "Let the big dogs go around the waterhole and go to the other side. ”

When the big dogs walked to the other side of the waterhole, everyone saw through the camera on the top of the big dog that there was a small hole in the top of the cave that was blocked by stones.

Lulu said, "The operator of Big Dog No. 2 saw a small hole blocked diagonally. ”

The soldier who operated the second big dog said, "See. ”

Lulu said, "Let the second big dog use the telescopic rod to push away the stones that are blocked in the small hole. Big Dog No. 3 is ready for launch. ”

With the operation of the soldiers, a thumb-thick metal telescopic rod stretched out from the back of the No. 2 big dog, and it rose for more than twenty meters, effortlessly pushing through the big stone blocked in the small hole more than half a meter wide.

At this time, a thick black metal pipe had already stretched out of the back of the third big dog, aiming at the hole.

Lulu continued to order, "Big Dog Three, launch." ”

"Poof! Burst! Burst! ”

The tube on the back of Big Dog No. 3 shoots three grenades, accurately into the small hole above.

A minute passed, and everyone saw that the data transmitted back by the life detectors carried by the big dogs showed that all the creatures in the cave above had stopped all kinds of activities, as if they were asleep.

Lulu clapped her hands and ordered, "Okay, brothers and sisters of Company B of the 1st Battalion of the Expeditionary Force, Ami, let's go in." ”

Along the route that the big dog had passed before, crawling, climbing, drilling, drilling, and drilling, the hundreds of people came to the big hole with a waterhole one after another, and stood all over the ground in the hole.

Seeing that the data on the helmet's built-in display showed that the air was harmless, Lulu reached out and pressed the ventilation button on the outside of the helmet, and immediately smelled a fishy stench in the cave that looked like animal excrement mixed with subcutaneous secretions.

Zhao Li said at this time: "Da Manniu, you put a small drone up and take a look." ”

"Yes! Sir. ”

The sturdy white boy, nicknamed Da Manniu, answered the question, took out a dragonfly-sized miniature drone from the side pocket of his backpack, threw it casually, and the drone flew straight into the big hole above.

Soon, everyone could see the inside of the large hole above through the built-in display of the helmet.

It was a hole about the size of the hole below, the only difference being that there was no pool, but part of the ground was still very wet due to the dripping water from the roof.

There are a large number of primates lying all over the cave, and there are about a hundred of them combined.

Their appearance is roughly the same as that of a mug, including their beak, except that their "lizard skin" is dark gray and has duck-like webbing between their fingers and toes.

And they don't have the same shame as humans, just like Muma, naked.

Damanniu manipulated the drone to continue to inspect the situation inside the cave, and the video sent back showed that the large hole was oval-shaped, and two cages were placed on the right side of the hole.

One of them was empty, five or six square meters in size, with simple and rough wooden tables and stools, hay on the floor, and about 15 centimeters wide between egg-thick fences.

The other cage is a bit different, with a smaller gap between each piece of wood, about 5 centimeters. Animals such as platypus, geckos, and bats were imprisoned, all of which were lying motionless on their stomachs or on their backs.

In a corner next to the two cages, a row of wooden sticks with stone sharps tied to the top was neatly placed, and several bundles of long rope, which seemed to be their weapons.

The drone continued to patrol, and everyone saw that at the other end of the hole, there were several rows of wooden shelves, on which some animal meat pieces and bloody leather were hung with ropes, most of them seemed to be "platypus", a few were "geckos", and there were also some small lizards the size of chickens and ducks and birds of various sizes that had been feathered.

On the side of the wooden frame, there are two large white stones, the top of which is slightly flat, and there are some stone "knives" on it, which are supposed to be used to cut meat.

Next to the big stone are three simple wooden tables and a few stools. Like the table in the empty cage, the table top is made of slender wooden sticks crossed with each other, and the legs are four thick L-shaped wooden sticks that are held together by rope to the table.

The stool is simply a large piece of wood.

On the edge of the tables and chairs, there was a small clearing of all kinds of exotic fruits piled up like a hill.

The walls of this cave, the bottom and the upper part are all made of gray-white rocks, and the slightly smooth places around the walls of the cave are densely painted with some simple patterns, including geometric figures, as well as rough patterns of various animals, all of which are drawn with red lines.

What is of most interest to everyone is that not far from the large stone that cuts meat, there is still a place where the ashes of the bonfire are still burning, emitting a red light.

Colonel Ami exclaimed, "These little fellows can actually use fire, stone tools, and raise livestock. Doesn't look stupid. ”

Lulu glanced at Ami through the transparent mask of the helmet and said, "Nonsense, do you remember Muma, she is very smart, and her kind is definitely not bad." ”

Ami said: "The appearance of these primates is very similar to Muma, but the color is different, and the limbs are webbed. ”