It continued to descend to a depth of more than 400 meters.

At this depth, the sunlight seems to be swallowed up by a crater, and it is almost impossible to see anything again, and if you continue to climb down, the light source will inevitably become weaker and weaker until it is completely lightless.

The depth of the earth's crust is more than 10 kilometers, it is unimaginable, this is only a depth of more than 400 meters, which makes people think that they have come to another world, and those coal miners who work at a depth of several hundred meters have a slightly lower psychological quality, and they are really unable to work. Of course, the coal mine can't be compared with this pothole, but there are similarities.

However, Chen Shi was still very relaxed, the pressure of the dark environment around him was not deep, he looked down, after the glimmer was magnified by the gamma suit, he could see the situation hundreds of meters below, but because the depth of this pit was far beyond this, he still couldn't see low.

Laser ranging is ineffective, one is that there is no reflective device, and the other is that there is something at the bottom of the crater that swallows the laser, including electromagnetic signals of all frequencies, like a black hole. This is different from seawater, the strongest electromagnetic waves and laser beams are difficult to penetrate hundreds of meters of seawater, but humans still have sound waves to use, and there is no way to do it in this crater.

Only primitive humans can be used to go down and probe for themselves.

In fact, it is not impossible to find another deep hole next to the big pothole, and maybe you can detect the condition of the big pothole. It's just an extra deep hole, even if the diameter of this hole is only a dozen centimeters, a few hundred meters is still good to say, if it is more than ten kilometers? Without a few months, it would be too difficult.

It went down more than 400 meters, this time to a depth of more than 800 meters.

"Huh, the voice?"

Chen Shi's ears twitched suddenly, and he heard some strange sound.

From below?

Chen Shi looked down, took out a flare gun, and fired a shot at the bottom.

White multi-star signal flares suddenly erupted in the crater air, and magnesium powder and aluminum powder with thousands of degrees Celsius of heat emitted dazzling light in the burning, illuminating the underground crater that had become deep black at once.

"Sea water?"

He was amazed to see that below his left, a large expanse of sea water rumbled out of the cracks in the rock wall, forming a waterfall and falling downward, and it was here that he heard the sound of the strange movement.

It's normal to think about it, the big pothole is not far from the ocean, because it goes deep into the earth's crust, so it is very likely that the sea water along the cracks in the earth's crust will appear.

The flare gradually burned out, but before it burned out, it was like a falling meteor falling into the depths of a crater, and soon there was no shadow.

How deep is it?

The Kongzhuang Coal Mine in China has a mining depth of more than 1,500 meters, while the deepest mine in the world is more than 4,000 meters deep.

Humans can make such deep holes, so surely the red and black pyramids must have the ability to create deeper holes, maybe they will penetrate the earth's crust? Went to Mokhorovich discontinuity?

After all, the diameter of the pit is quite large, and the gap where the seawater penetrates is not exaggerated enough to submerge the pothole, he continued to descend hundreds of meters, to a depth of more than 1200 meters, and the waterfall due to the influence of gravity, then formed a drifting rain, which permeated the entire pothole.

He fired a flare, but he still couldn't see the depth.

Carrying 12 flares along the way, he couldn't waste too much.

It's been a full hour.

Isn't it too cautious?

On the way back, he left himself an hour, that is, he had two more hours to explore. And at the current rate, he may not be able to explore it to the end.

"Gotta speed up."

Chen Shi thought about it, and simply stopped following his previous actions, but jumped down.

The safety rope is not directly set up with a safety card lock, just to match his speed, otherwise with his current jump, the safety rope will be directly stuck to prevent him from "falling to death".

And he landed so freely, the speed is fast enough, but it may also scare the people above.

Estimated to reach a depth of more than 2,000 meters, Chen Shi stretched out his hand violently, stuck to the rock wall like a steel tong, and the excessive gravitational potential energy grabbed large pieces of rock one after another before he stopped his falling figure.

"There's a change in the composition of the air."

The gamma suit does not show the composition of the air, but when he fires the flare again, he can see the steaming steam in the air.

The sea water that fell from above, was evaporated?

In fact, if the diameter of this pit was not large enough, if it was a narrow pit like a coal mine, the air would have been turbid at this depth, but even so, the air here is definitely not breathable by normal humans.

And looking up from here, above the straight crater, only a faint point of light can be seen, which is the exit, but in this position it seems to have become a star point in the night.

At this depth, it still hasn't reached the end.

Could it be that this pit really leads to hell?

Chen Shi retracted his gaze, in fact, if he thought about it carefully, this depth was nothing, the passage of the two realms was amazing, it was a length of tens of kilometers or even hundreds of kilometers, in comparison, this depth of the pit was not even worthy of lifting shoes.

Then come again.

Anyway, for this exploration, the safety ropes are equipped with more than 20,000 meters. It was enough for him to go deeper than twenty kilometers.

Jumped down again.

Facing the fierce wind below, Chen Shi seemed to pounce on the black hell.

Depth...... 7000 meters!

Chen Shi grabbed the rock wall and stopped.

He couldn't go any further, at least not this time, or he wouldn't have time to return to the surface.

Plus, he sensed something was wrong.

I was faintly uneasy.

took out the flare gun, and Chen Shi fired a shot at the bottom.

A blinding white glow illuminated the crater, and it was still the same as before, dark, dusty and misty, and at least sixty or seventy degrees Celsius.

I still don't see the presence of the red and black pyramids.

That thing suddenly appeared and created such a huge pothole, could it have disappeared without doing anything?

The only purpose of coming to Earth is to create an unbelievable pothole? And then so that the earthlings are confused? And a headache for it?

To be honest, if that's the case, it would be wonderful, and it would be nice to leave so many bottomless potholes as natural landscapes, and don't make any mess anyway.

"Huh?"

Just as Chen Shi was thinking wildly, he suddenly sensed that something was wrong.

The flare that had just been fired downward was still glowing, and it had not even entered the extinguished state, but it suddenly disappeared without a trace.