Alien Relic Hunter

This airtight door was very large. Ke Lan visually inspected it and measured it to be nearly five meters high and more than two meters wide. The entire door panel was made of a dark green alloy, and an octagonal valve with a diameter of more than half a meter was installed. In the middle of the door panel, the metal handle is covered with rust.

Valves with purely mechanical structures are not common in the ruins of Alvin civilization. Most of their devices are driven by energy crystals, even the doors are no exception, and the airtight door in front of Ke Lan appeared. , on the contrary, it is closer to the design style on the side of human civilization.

"Could this place have been transformed by humans?" An idea popped up in Ke Lan's mind, but he quickly rejected it - not to mention whether anyone had ever entered this place, just looking at this The degree of rust on the airtight door suggests that this thing must have been installed here for at least hundreds of years... and it has only been fifty years since humans came to Alpha Planet.

"Hmm... Hundreds of years are still too conservative. I'm afraid it has to be tens of thousands of years..." Ke Lan poked the door panel with his finger, only to find that his finger was instantly sunken into the door panel - this dark green thing was not at all The original material of the door panel is a flocculent substance similar to rust formed after the alloy is oxidized. As for why it shows this color, it must be that the formula of this alloy contains a large amount of copper elements.

"But that's not right... The metal plates and metal frames used to reinforce the passages in other places are not so rusty... Logically speaking, the materials used in this door should be better than those in those places. Why is this door so rusty?"

Ke Lan pondered for a few seconds, and then said in a somewhat uncertain tone: "Could it be related to the thing behind the door?"

He glanced at the large characters engraved next to the airtight door - "First Level". Semantically speaking, these alpha characters should not have too much deviation in interpretation, but because of this, the meaning of these characters The information that can be provided is also extremely limited.

Do you want to open this door?

Ke Lan suddenly hesitated in his heart: before he pulled out the stalagmite on the corpse, it awakened the erosion seeds that had been in a state of suspended animation for decades; later, he pried off the ore on the stone pillar, causing seawater to flow back into the cave, almost Drowned in the cave... This time, if the door is opened rashly, wouldn't something fatal happen again?

To be honest, Ke Lan is really a little timid...

As a relic hunter, cowardice is not necessarily a bad thing. As the old dog said, those who are brave will have died long ago, and those who are cowardly can survive until now.

After thinking for a long time, Ke Lan finally decided to give up - his luck seemed to be not right today. Who knows what monsters and monsters are waiting for him behind this door. By then, even if he regrets, it will be too late.

Ke Lan took out a circle of tape, tore off a few pieces, and pasted them on the crack of the air-tight door and the hinge at the other end, and then continued to move forward.

The sound of water flowing above the head disappeared. It seemed that the seawater from the outside was no longer pouring in. After all the seawater entered the reservoir, the cave above would be passable.

However, Ke Lan had no intention of going back above. After learning that the drainage system of the Alpha people had the ability to deform at will, the original "underground maze" was directly upgraded to a more difficult "moving maze". Even if Ke Lan had it in his hands With the design drawings of the construction of this drainage system, he may not be able to get out of it - after all, no one can predict when the water flow channel will change, and he knows nothing about the incentives and purposes of the change. .

In contrast, this cave, which may be a "maintenance passage", is much more stable.

…

After walking another four pieces of chalk, Ke Lan was forced to stop.

There was another landslide, but this one didn't leave even a single gap. A large amount of rubble blocked the passage so tightly that even the snake-shaped robot specially designed to explore small pipes couldn't get through. .

The only useful tool in Ke Lan's hand was a folding pickaxe found in the 776 team camp. Judging from his physical strength, it would take a long time to clean up one meter of gravel. Take a full day.

The previous section of the cave-in tunnel was seven or eight meters long. If this section was as long, Ke Lan would have to dig for a full week.

Moreover, the further you go, the worse the situation in the tunnel becomes, and it is estimated that there will only be more and more such landslides.

"Alas." Ke Lan sighed helplessly, "It seems we still have to go through that door."

A mark was left at the landslide, and Ke Lan could only turn around again.

Following the chalk line drawn on the wall, he returned to the huge airtight door.

The tape used as a seal on the door was intact, which made him relieved - according to the common plot in horror movies, the tape on it should have been torn by this time, and then something was added to hide it. Figures in the darkness and the like...

However, this kind of plot is not surprising in the ruins of Alpha Civilization... Ke Lan has read many tomb robbing novels from the old era. Compared with the high-tech traps of Alpha Civilization, the mechanisms of those ancient tombs are just It can be regarded as childish, and things like rice dumpling ghosts are even more insignificant in front of the erosion seeds.

"...This valve...is really high..."

Ke Lan stood on tiptoes and stretched his arms as high as possible, but he could only barely grasp the lower edge of the valve and was unable to turn it at all.

"It seems that the data published in the official information is quite accurate..." For Alpha, who is about 2.5 to 3 meters tall, the size of this airtight door is not exaggerated, and the height of the valve is also just right. But for humans, that's a little troublesome.

There was no other way, so Ke Lan could only use a pickaxe to hook the valve and turn it bit by bit by constantly pulling it down.

There was a tooth-aching friction sound between metal and metal, and large areas of dark green oxide fell off... Fortunately, the mechanical structure inside the valve was still intact. When pulling the valve, Ke Lan even You can also clearly feel the force of the gears interlocking - if these gears are as rusty as this door panel, then there is probably only one valve spinning naked over there, even if Ke Lan rotates it hundreds of times. Circle may also open this door.

"Click."

A crisp sound came from the inside of the air-tight door, followed by a continuous sound of metal collision. Ke Lan waited for thirty seconds before the air-tight door opened with a "snap" at the crack. A very small gap.

The door opened.