The brightly lit Morro mine is worthy of being the largest gold mine in Xiaoyao City in the past.

The huge mining area special train like a fortress train, the huge mine hole that can allow four mine trucks to enter, and the long iron cabinet with an interior depth of 10 kilometers have all contributed to the scenery of Xiaoyao City.

At its peak, more than 20,000 people were involved in the mining of the more than 200-year-old mine, using the most advanced mining equipment on the planet, with a record 30 years of accident-free construction and transporting a rich ore with a gold content of up to 5%.

At that time, the people who worked here, even a small worker, had enough pay to go to Anle Pavilion to have a good time, which could be described as singing and dancing.

Until the Morro mining area was close to exhaustion, and the solid basalt could no longer expand, personnel began to be transferred to other mining areas to continue the life of gold panning, and the Morro mining area officially came to an end.

But a catastrophe 15 years ago made the more than 1,000 miners who remained here disappear in an instant, and since then it has become an S-class forbidden area that no one can approach.

Walking in this kind of realm without a single voice, even if Brother Xin is as impenetrable as Iron Man, he still can't help but beat his heart faster.

The sensors in front of me were constantly switching between various lenses to detect the surrounding environment, but there was no sign of any creature, the intact head of the minecart, and the confiscated empty dinner trays on the table, all of which were a sign of how sudden the cataclysm was, and did not even give anyone a chance to escape.

Their bodies were gone, and the ground was littered with the clothes, firearms, and protective gear of the deceased.

"The thing that attacked them was very strong, not only did they eat the flesh and skin, but even the bones and blood were not left."

Holding the Sunbow in his hand, Nightingale half-crouched in front of a pair of armor left by the soldiers of the Greedy Wolf Battalion, judging from the military plate, this should be a relic of the centurion's elite, the saber that had been cut to break was still scattered aside, it was obvious that he had done his best, but in the end it was reduced to food.

"Can't we really drop a miniature nuclear bomb in it, blow this place upside down, and leave?" Brother Xin said, and the rocket launcher behind him automatically popped out, revealing the weapon of mass destruction with a flashing red light on the warhead.

"Our mission is to investigate the cause of the abandonment of the Morro mine, not to erase it from the map, or at least to find out what caused the Morro cataclysm."

Zhang Lan picked up the scattered saber as he spoke, and took out a red fragment from between the missing blades, about the size of a fingernail, emitting a dark red light, not metal, but it seemed to be harder than metal, and he couldn't tell what part of the beast was.

Wild beasts, they have always been the root cause of restricting humans from leaving the protection of the city walls and not daring to roam the forests, rivers, and even the ocean.

They have undergone genetic mutations because of pollution, or because they want to live, and they have lost their ordinary image in the past, becoming bigger, stronger, faster, and even wilder.

Humans have tried to abandon their past knowledge of nature and redraw the structure of the food chain in the process of exploration, and there is no doubt that in this food chain, humans have been ranked at the bottom of all living things, even the smallest fireburst beetle, which can easily burn an adult male.

Without the help of sufficiently powerful modern equipment and numbers, in the eyes of these wild beasts, there is no difference from feeding.

Humans are also hierarchically compared to these wild beasts that can easily kill them, such as beasts that benefit humans, pigs that grow stronger, and chickens that give birth to 10 legs, all of which are D-class.

And the more dangerous ones are that they start to turn into carnivorous bugs, rats with long arms, and rabies that have been exposed to nuclear radiation are classified as C.

Like the jungle wolves that Zhang Lan has experienced, their individual combat ability is average, but because it is a team operation, the danger level is defined as A.

Wild beasts above A are called S-class creatures, and they are rarely seen and documented by humans, because most of them have survived.

It is said that the Wild Beasts of the S rank and above have evolved to possess intelligence that is not inferior to that of humans, and they are the true rulers of the wilderness, and can easily defeat human armies without the help of high technology or armament.

It is precisely because of the fear of them that humans draw one forbidden zone after another on the map to avoid unnecessary conflicts and drawbacks.

Zhang Lan was a little suspicious that the catastrophe in the Moro Mining Area was related to this S-class wilderness beast, although this kind of beast would not easily attack the boundary outside his territory.

The Moro mining area has also been operating smoothly for 200 years, and this kind of alien beast has never been encountered before, but if it weren't for the attack of this level of alien beast, it is hard to imagine that such a large human station would become an empty city overnight, and in the following ten years, there has been no news of exploration feedback.

"Listen up, and once again, our mission is to quickly find the true cause of the catastrophe in the Morro mine and to evacuate the samples. From now on, the three of us will go into the depths of the mine as an advance force to investigate, and the seven on the periphery will be responsible for information integration and fire reinforcement at any time, but once we die, the others must be evacuated immediately. ”

Zhang Lan said it lightly, as if a person's life is no different from a little bedbug.

"Brothers, no matter what he says, you must save me! You owe me a gambling debt, and you don't have to pay it. Brother Xin emphasized in another secret channel.

"Actually, if you're dead, we don't have to pay ......it back," I don't know who said it, so Brother Xin wanted to lift the 12.5 mm caliber machine gun in his hand to level the cliff where the group of little rabbits were standing.

"Did you hear me clearly?" Zhang Lan said solemnly.

"Roger, do." All the staff replied in the intercom.

"Let's go."

Zhang Lan took the lead in jumping into a cruise guide car erected on the rails, the engine started, and the nightingale jumped on the co-pilot, while Brother Xin could only turn over to the container behind him and set up the machine gun in his hand on the roof of the cab.

Zhang Lan drove directly into the huge cave in the mining area and disappeared into the eyes of everyone.

And all of this was also transmitted back to Anle Pavilion through the sensor camera of Kiki's eyes, which belonged to the aquarium-style office of Kunsha 07.

"Zhang Lan, Zhang Lan, I put a lot of money on you, if you lose, it's not just as easy as dying."

While eating a snack, Kunsha 07 switched back to Zhang Lan's portable camera, watching the small pickup-like rail car advance deeper into the mining area.