Chapter 1646: 1646. Spiral at the Bottom of the Lake

This tracker is very powerful. It relays signals through satellites. The signal radio frequency is complex and can cover two kilometers away.

But this was on land, and the Inuit jumped into the lake later, and the signal on the tablet suddenly went bad after he got into the water.

Li Du hurriedly asked, "Is the tracker waterproof?"

Little Marklov made an OK gesture and said: "The signal will be worse in water, but don't worry, it is waterproof."

Indeed, although the signal reflected on the computer has weakened a bit, it is still clearly visible.

They couldn't go into the water in a swarm, because the boy disappeared after jumping into the water before, and Li Du was always a little afraid of this lake.

Little Marklov came up with an idea, they could take a kayak to track from the lake, anyway, the deepest part of the lake was only 500 meters, and they were still within the signal reception range of the tracker.

"Besides, I don't believe this guy can dive 500 meters. Come on, he doesn't have tools to assist him, let alone a submersible to protect his body. How can he dive 500 meters, right?" Little Marklov said.

Li Du said: "Be careful, let's follow him closely."

The signal flickered on the screen for a while, and finally, the red dot disappeared.

At this time, the kayak was in the middle of the lake, and Lost Island was not too far away from them. The underwater at this location was still part of the base of Lost Island, but it was at the end of the base, and the water depth was hundreds of meters.

The group of people on the boat were dumbfounded, and the big Mark Love asked: "What is your unassisted free diving record?"

Brother Lang said: "I am about forty meters. Hei Niu is an expert in this field, about fifty meters."

"It's at least a hundred meters deep here!" Little Marklov gasped and said.

Li Du said: "Don't discuss this yet, the signal has disappeared, what's going on?"

Little Marklov scratched his head and said, "Either the signal has been cut off, or the tracker has been destroyed, or the signal from it cannot be received anyway."

Li Du said: "Then write down this location and prepare the submersible. Let's go down and have a look."

"Go straight down?" Brother Wolf asked.

Li Du shook his head: "No, first put down the underwater camera. Mr. Elson sent an ocean exploration robot, right? Let it go down, and we'll see the situation."

He didn't want to take the risk directly, the depth of 100 meters of water was too scary, who knows what's underwater?

After all, he was going to be a father soon, and he couldn't have any problems. He had to go back to see Sophie, and then wait for the child to be born to see the child.

Soon, the ocean exploration robot was lowered into the water.

The whole body of this robot is spherical, with multiple wheels and supports in all directions, which can adapt to the complex terrain of the seabed.

It's connected by a cable that provides it with power and is also responsible for relaying back what the camera captures.

The robot slowly fell into the water, and there were some cameras around it. These cameras were fixed by the surrounding brackets. When it reached a certain water depth or a predetermined position, the computer could control the robot to release the brackets and release the cameras.

In the end, the robot fell to the bottom of the water, and then the strong lights shined out, and the scene at the bottom of the lake appeared.

At a depth of 100 meters, the sun is powerless, and it is dark here. If the robots don't turn on the lights, they can't see anything.

The lights were turned on, and a blurry image of the lake bottom appeared on the screen.

As Li Du already knew, the bottom of the lake is made of sand and rocks.

Generally speaking, compared with the ocean, lakes are stagnant water areas. The fish, shrimps, algae and other organisms living in the lake will rot, and then they will be deposited at the bottom of the lake for a long time to form mud.

But Anjikuni Lake is not like this. The sediment at the bottom of the lake seems to have been stirred up by something, making the lake water turbid, and the bottom of the lake, which should have been a mud swamp, exposed the underlying crust.

The robot's field of vision was limited, Li Du operated it to move forward, and after a certain distance, it was blocked by a stone.

There are some water snails and shellfish growing on the stone, among which several shellfish are white with complicated and gorgeous patterns on them.

Li Du hastily took out the two shells he got from the boy and Bit. Not surprisingly, they were exactly the same!

"They should come from here..." Before he could finish his sentence, the screen suddenly went dark, and no signal came back.

This surprised Li Du, and hurriedly operated the robot to return.

At first he thought something was blocking the camera, but there was no response after a short operation, and he immediately understood that it was not something blocking the camera, but something that took the robot away.

Brother Wolf retrieved the cable connecting the robot. Sure enough, the cable broke and they lost the robot.

Looking at the cable break, Brother Wolf said, "It was cut with a sharp knife, and the incision is very smooth."

Little Marklov scolded: "Fake, who is making trouble underwater? Change into the diving suit, I'll go down and see what's going on!"

Li Du stopped him, but he was not excited or angry, but smiled easily and said, "Don't worry, I think we are getting closer to the truth. They got rid of the robot, but we still have cameras .”

After another operation, several cameras in the water were activated by remote control.

This kind of camera has its own battery, and the electricity is used to supply video and lighting separately. Because the battery has little power, Li Du generally does not use the lighting function.

But now is obviously not the time to save power, so he activated all the cameras controlled in the water.

Like a sharp sword piercing the darkness, many places on the dark bottom of the lake became brighter.

One of the cameras pointed directly downwards, and the scene it captured was transmitted back to the computer screen, which surprised Li Du and his party:

I saw that under the light, the bottom of the vast lake was not flat. There were circles of protrusions on it. These protrusions came from the earth's crust, but because of their spiral shape, it seemed that a whirlpool had appeared at the bottom of the lake.

The rock that blocked the little robot's path just now came from the protrusion, but because the protrusion's crust is too long and wide, it can't be seen unless it is overlooked.

Looking at the circles of spiral bulges, Brother Lang was surprised: "What is this? A spiral breakwater?"

Firecracker pointed to a corner of the screen and said, "Switch quickly, switch to this camera, someone..."

Hearing his words, Li Du quickly switched the view of the camera, but it was too late. After switching again, the screen was blank, only a few white fish passing by wagging their tails after a while.

In addition, the small screens on the big screen went dark one by one, which is the reason why the camera was broken.