Looking at the direction of this railway tunnel, it is connected to Germany to the west, and to the southeast is the original Sudetenland. Judging by the direction of the ventilation duct overhead, you don't need to walk a few dozen meters to the east, and this will lead to the territory of Czechoslovakia.

Zhang Nan judged that there was a problem in the east, so he went to see it.

A repeater was placed at the door of the ventilation room, and the seven people said hello to the same head, and then went east.

The rails and sleepers are still there in the tunnel, and there is water seepage in some places, but the amount is not large. The walls and roof of the tunnel were not reinforced with cement, and it looked like the time to open it was earlier than during World War II, and the construction requirements did not involve aesthetic problems.

Looking at the quality, it is okay, there should be no danger of collapse, there is not even a rock abrupt out of the head, and the quality of the work is very high.

There should be a very small number of geological fissures at the bottom of the tunnel, otherwise the seepage would fill the place.

Only forty or fifty meters later, there were two more cement rings on the walls on both sides of the tunnel that did not reach the top of the tunnel: very thin, only a dozen centimeters thick, fifty or sixty centimeters wide.

There is also an iron bar inlaid in the middle of each side, and the words are engraved on both sides of the iron bar.

"Germany, Austria-Hungary, this is the underground border. ”

Listening to what Boss Guan said, several people understood: good guys, this tunnel was dug at least before the end of World War I, no wonder it looks at the structure relatively early, and even the sleepers in the tunnel are not only wooden, but also look old enough (under normal circumstances, the sleepers in the tunnel will be reinforced concrete. ）。

Treasure hunting, I have checked a lot of World War II information before, and I have not found a record of a railway tunnel here, and the railway 3 kilometers away to the south also existed before World War II.

It turned out that the problem was time: when it was built, the southeast was not called Czechoslovakia, but Austria-Hungary, and the name of this side was the Second German Reich.

Continuing forward, the tunnel is slightly curved, and it has not gone out for dozens of meters under the strong light, and the tunnel is no longer empty.

"Train!"

Seeing the objects in front of him clearly, Zhang Nan unconsciously said: A train car appeared on the track in front of him, and it was a freight car.

Some stories of Nazi treasure hunting popped up in my head, and I was about to say it, but I didn't think to listen to Guan Laodao: "Stop! Hai Bo and Randy will accompany Anan back to the top of the mountain first, and you will give a signal when you arrive."

After that, Wen Dong, Ma Wei, Paul and Lin Man were divided into two groups to see if there was any trickery!"

After a few "understood", Zhang Nan glanced at Boss Guan and said, "Have you heard of it?"

The lights were a little white, and I couldn't see Guan Xingquan's expression clearly, so I heard him say: "The golden train, according to legend, has a train on the Polish side, and there is enough bombing in it to blow up the tunnel in a low sky, so you have to guard against it."

Hurry up and let's go. ”

Zhang Nan didn't insist, so he returned.

I didn't want to take any risks, so I honestly returned to the ventilation chamber, put on the safety rope and said to the top and slowly climbed up.

This more than 100 meters can be laborious, and when you get out of the vent and see the sunshine, you have a bit of a taste of returning to the world.

I said hello to the intercom and listened to what Boss Guan said: "Let's start investigating, wait for our news, don't come down until it's completely safe." ”

Zhang Nan spared his life, and he wouldn't join in the fun for the sake of a legend: he didn't understand the bomb-bomb thing.

But don't be too moved, check the legendary thunder that can only exist, the boss of the next pass is not a daredevil, just in case.

It takes time for the guys below to check one carriage after another, and Zhang Nan is not idle, he ran up the ridge and studied the railway with Xiang Weirong.

Why research?

Trend.

Although it was already understood at the time below that the railway was leading to Czechoslovakia, what was the situation on the ground now?

Walking from the ridge to the top of the mountain, I looked at it with a telescope for a while, but I didn't see any trace of the Czechoslovak railway other than the international railway three kilometers away.

It's been too long, at least half a century, or even more than 70 years, and if the tunnel under it had been blown out after the First World War, there are not many Klingenthal residents in Germany who know about it.

Why did it blow up?

The wagon compartment below was from the thirties and forties, and Randy judged that it could not be World War I.

On the other side of Czechoslovakia, there are even fewer people who will know about this railway, which is full of immigrants after World War II, and all the Germans who have lived there for generations were forcibly driven to Germany after World War II.

Latecomers would not have known about the tunnel before World War I.

After watching it for a long time, Xiang Weirong said: "This slope is big enough." ”

Zhang Nan nodded.

Due to the mountainous terrain, the railway connected by the tunnel below should have been connected to Klingenthal 3 kilometers away on the German side, and it is unlikely that it would have come from other directions.

Trains can climb hills, but because the wheels and rails are made of steel, the coefficient of friction is relatively small, so the slope cannot be too large.

Even if there is no railway in his hometown, Zhang Nan knows that the slope of the railway is not large, according to the standards of Huaxia, the slope of the general trunk line will not exceed 25 thousandths, and the particularly difficult sections can basically not exceed 30 thousandths.

Of course, there are exceptions, for example, when Xiang Weirong was a soldier, he took the train on the Baocheng Line, and he heard that the slope of the Qinling section reached 33 thousandths, and it is said that the largest slope of the Huaxia Railway is on a branch line in the northeast, where there is a section with a slope of more than 40 thousandths!

10 thousandths means that every 1,000 meters of elevation rises 10 meters, which is less than 3 kilometers away from Klingenthal in a straight line, and there is no room for a large circle in the valley.

The altitude of 3 kilometers is estimated to rise by 100 meters, and the slope can be more than 30 thousandths, which is big enough.

After looking at the environment clearly, the new international railway and tunnel on the Klingenthal side may be caused by the too large slope and inconvenient transportation.

And the tunnel has become more likely to have been blown up at the end of World War II: it is not easy to dig a tunnel in the mountainous area, and it may be used as a backup tunnel, just like the Erlangshan Tunnel on the Sichuan-Tibet Line is still being maintained after the Erlangshan Tunnel on the other side of the mountain.

But this kind of research doesn't need to take a lot of effort, and the train left in the tunnel is the focus.

When Zhang Nan and the two returned to the vent, the news from below came.

"There were two separate trains, a total of 26 cars, and no locomotives were found, and no mines were found on the periphery.

The east side was also completely blown up 200 meters away from the train, and we had opened the first stuffy tank car to the west, which contained Anan's favorite things.

But don't come down yet, we need to check all the doors and see if there's any problem. ”

What does Zhang Nan like best?

When Guan Xingquan drove a 212 jeep to Xiqin to dig for treasure, Zhang Nan told the boss of the pass: He likes gold the most!

I don't know what else is in the train, but I can already be sure: it's a golden train!