Lin Rui looked at the colonel and nodded, "In other words, no one knows about the secret path except you.

But it has been a long time since you left there, so how can you be sure that this secret passage has not been discovered, especially by the guards. "

"I can guarantee this because the guards never go down to the mine.

They have guns and cannons in the mine. But when we got to the underground, there was only an invisible dark, dark and damp roadway, which could collapse at any time.

They will not put themselves in a dangerous situation. "The colonel replied.

"What about the other prisoners? Your companions, they have been working underground for a long time, and they may have access to the secret passage you mentioned." Lin Rui looked at the colonel, "If they found out and used that secret passage Run away. Then the guards will also find the passage."

"I can also assure you on this point. They did not find the closed passage of the road. First of all, the place is very hidden, and it is difficult for ordinary people to find it.

There is another reason, if our people find the passage there and use it to escape. I should have known it a long time ago. "The colonel whispered.

"Why are you so sure?" Lin Rui asked while looking at him.

"The Gerald Fort labor camp has a linkage with several surrounding labor camps. Once Gerald Fort breaks out, all the surrounding labor camps will be under martial law, and internal self-examination will be initiated. To prevent similar things from happening." The colonel replied Tao.

"In other words, if there is an escape event in Gerald Fort, you will be aware of it for the first time." Lin Rui nodded.

"That's right. Fort Gerrard is only a dozen kilometers away from the labor camp where I was previously detained. If there is a prison escape there, the labor camp I am in cannot remain calm.

In fact, the escape has only happened once in recent months, and it has nothing to do with Gerald Fort. "The colonel replied.

Lin Rui turned his head and looked at Sergey, "What do you think?"

"I think we can try. Anyway, it's more reliable than hard work. If it really is like the colonel said, the secret passage is a great opportunity for us." Sergey Nod.

"I feel so too." Lin Rui whispered. "This is likely to be a good opportunity. If we can find the secret passage, it means that we don't have to mobilize people.

You can infiltrate the Fort Gerald Labor Camp with a small amount of manpower and rescue General Kadom. In any case, we can turn an extremely difficult battle into a small rescue operation. "

"I am familiar with the passage there, and I can lead the way for you." The colonel replied immediately.

"Good colonel, the information you provided is very important. And we really need your full cooperation.

During the entire operation, you must listen to our arrangements. Do you understand me? Lin Rui asked back.

"Understand, from now on I am no longer a colonel, but a soldier under you." The colonel nodded.

"That's it. Can you still move freely and use weapons?" Lin Rui asked while looking at him.

"No problem, so I might not be able to run. But in the underground passage we can only bend forward at best, and I don't need to run.

As for the shooting of light weapons, whether it is a rifle or a pistol, my results have always been good. "The colonel replied.

"Okay, Colonel. Now you can act with us. Where is the entrance of the secret passage?" Lin Rui asked.

"Not in Gerrard Fort, wait behind a hillside on the left side of Gerrard Fort. It is a very old mine. It's easy to find there. Just find a small railroad track in the grass that leads to the mine."

"Railway?" Lin Rui frowned.

"Yes, that railroad track is very old and most of it has been rusted. It is hidden in the grass, and it is difficult to find if you don't search carefully.

But as long as you find the set of rails, you can follow the rails to find the old mine pits that have been abandoned. The old mine is the entrance to the secret passage. The colonel nodded.

"Then we get off the car in front and search the hillside area on foot." Lin Rui turned his head and ordered.

"Boss, this mountain area is not small. In most places, the grass is taller than people. Finding a hidden railroad track in such a place is like looking for a needle in a haystack." Sergey complained.

"Russian made sense. If we search manually, it is really not easy. If there is a satellite, we can compare the satellite image and roughly judge the track of that railway. Unfortunately, we don't have this right now. The resources of the side are gone." Scarface sighed.

"Don't be discouraged, I have a way." Lin Rui patted him on the shoulder, turned to Sausage and said, "Come to Sausage and take out your two drones. We need to do an aerial reconnaissance in this area."

Sausage nodded, "You mean, through the connection of the drone and the mobile computer. Use the drone as a real-time aerial surveillance device.

Then use the drone's aerial photography to determine where the abandoned railroad track is. "

Lin Rui nodded, "Although this area is very deserted. This section of railroad track has long been hidden in the grass as high as one person.

However, it is impossible to grow grass on the rails, so the overall view will be different from the surrounding environment.

We may not be able to detect this subtle difference below. But the aerial photography of the drone can capture this not very obvious trace. "

"I understand, there is no grass growing on the railroad tracks. So if you look from the air, it will be a little different from the surrounding lush environment.

Although we can't find it on the ground, the drone's aerial photography can see this long trajectory in a large range. Sergey nodded.

"That's right, this can save us a lot of time." Sausage found two micro drones from the inside of the combat bag.

The two miniature drones are military models developed by General Motors. It has high-resolution aerial photography and is equipped with a high-endurance battery.

After Sausage took out the two drones, he turned on the switch and threw it into the air forcefully.

The drone rolled over for a week, floating in the air. This thing must be connected to the control system of the mobile computer before it can be operated.

A few minutes later, two drones hovered in the air under the control of Sausage. Through the aerial photography of the drone, the surrounding topography can be clearly photographed from the air.

Sausage carefully observed the high-resolution images transmitted by the drone. "Come and see. Here..."

"From this position to here... you can see a very obvious band-shaped trace. If I am not mistaken, this band-shaped trace should be the abandoned railroad track." Lin Rui pointed to the position on the screen. "Leave right away and find the nearest rail position to us."