Biographies Characteristics Analysis

Abandoned railway tunnel (Dida tunnel). Abandoned tunnel under Naples, which has become a crypt for cars

Which began in the second half of the twenties of the XX century, is perceived by many solely as an achievement of advanced modernity. Illuminated crossings, beautifully (and in some places superbly) decorated stations, hundreds of kilometers of tracks, passenger traffic of over 8 million people a day ... All this somehow does not fit with the popular opinion that there, under the ground, an alien, terrible, otherworldly world is based . But there are places in the looking-glass transport kingdom where even inflexible materialists begin to doubt that everything in this world is explainable. These are abandoned metro stations in Moscow. Legends associated with them run between people, as if one wants to jump into the next “carriage” to find out the amazing underground secret, but not one! (On the photo at the bottom of the station "Soviet").

Dreams come true and don't come true

Many guests of the Russian capital (and even natives) doubt that there are (or were) abandoned metro stations in Moscow. There is a list: "Soviet", "Pervomaiskaya", "Volokolamskaya", "Kaluga". Some remained ghosts, others returned to service after a long oblivion.

Mysterious worlds are located a little away from the underground transport civilization. They go around, slip, use for a different purpose. But the cheerful voice of the announcer does not sound here: “Be careful, the doors are closing! Next station…". These are original monuments to unfulfilled or changed intentions of a reasonable person.

It is noteworthy that the territory hidden from sunlight Moscow with passages, casemates, cellars existed in the 18th century. There is information about the presence of a map of this "dark country". Let's make a short guide that tells about where the abandoned metro stations in Moscow are located and what they look like. Photos will help us better imagine the secret corners.

Art. "Soviet" (Zamoskvoretskaya line). She is a legend in her own right. It is known that the object was part of the second phase of the construction of the Moscow metro (the project was approved in September 1935). They wanted to install it in the gap between the current station "Teatralnaya" (formerly "Sverdlov Square") and "Mayakovsky".

During construction, problems arose, including hydrological ones. As a result, the original ideas lost their relevance, especially after the Tverskaya station (another name for Gorkovskaya) appeared. However, elements of the project allegedly came in handy.

According to rumors, on the site of the failed "Soviet" they built a bunker of the civil defense department, which has high degrees protection from adverse external influence. Rushing in a car along this metro line, especially curious people peer intently at the underground landscapes: what if at least a hint of this structure flickers? But the mystery remains shrouded in darkness.

If we assume that the bunker exists, then it is located a few meters from the wall of the distillation tunnel, approximately under the place on the surface where the monument to Yuri Dolgoruky stands.

"Pervomaiskaya" (lost)

Art. "Pervomaiskaya" (1954 - 1961, Arbatsko-Pokrovskaya line). Unlike Sovetskaya, this was an active underground stop. It was located in the building of the Izmailovo electric depot (behind Izmailovsky Park).

The lobby can still be seen today. Until recently, above the entrance group flaunted: “Metropolitan. L. M. Kaganovich” and beautiful clear letters: “Pervomaiskaya”. Today, work on lifting repairs is in full swing inside the building: timely troubleshooting, replacement of worn parts is the key to the safe operation of the metropolitan metro.

Workshop workers have the opportunity to see tiles, stucco, and gilding residues on a daily basis, as confirmation that the production facility was previously a subway station (terminal), where ordinary passenger life. There is an opinion that a new one could turn out from the room (the old one is already cramped): exhibition complex on the base closed station- a great way to show and tell the tourists "how it was."

"Volokolamskaya" (revived)

And here is more information on the topic "Abandoned metro stations in Moscow." Art. Volokolamskaya (Tagansko-Krasnopresnenskaya branch) consists of three shallow spans. Two rows of columns of 26 pieces each. The design is an analogue of the Tushinskaya, assembled in 1975. were not produced, as the opening was postponed.

The object is located under the former Tushino airfield (airfield). In the spring, when the snow melted, its outlines were visible. Since 2010, there has been a revival in the area in the form of construction work on the stadium for the Spartak football club.

If in the 1970s residential quarters had been erected here, as planned, Volokolamskaya would not have fallen into the category of mothballed for decades. The “frozen” station could be especially seen when the train approached the Tushinskaya stop (especially when the environment immersed in darkness was illuminated by the lights of the train moving along a parallel track).

Surely, many passengers mentally wondered: how would everything look in finished form? Now there is no special need for such fantasies: in 2014, the station was opened. Not far from it, Spartak players are training at their home stadium. So not everything is so sad: although not at noon, but lifeless shadows disappear, sometimes changing names. Volokolamskaya is now called Spartak.

"Kaluga" (temporary)

This fickle "person" also enters abandoned metro stations in Moscow. Art. "Kaluga" ( Kaluga-Rizhskaya line) operated from 1964 to 1974. The name was given to the facility in which it was opened - the depot "Kaluzhskaya". Exact address: Profsoyuznaya street, 59, the farthest hall 5, or nave. Is in close proximity from the modern, acting. Once it was the final one on this (Kaluga) radius.

Until 1971, the wall of the extreme nave had a window. But the depot was expanded by adding three more halls. The wall became deaf. Two paths on Kaluga led to a dead end. No decorations were observed at the facility: since the 60s of the 20th century, artists and sculptors were not involved in the design of the stations, the matter was put on stream.

Lighting gave the time of waiting for the train, passengers whiled away on simple wooden benches. The platform and the lobby with ticket offices and turnstiles were a kind of common space - the waiting area turned into entrance group. In 1974, when the above-ground part became underground after the extension of the line, the temporary station was closed.

Platform last years It is a warehouse (according to some reports, it was completely destroyed), service rest rooms are equipped in the old lobby, a service tunnel allows you to move around bypassing the passenger area. In some places you can see old lamps. There is an opinion that all this economy would be nice under the wing of the Moscow Metro Museum, until time completely erased the traces.

Sparrow Hills (reconstructed)

What do you think of such an abandoned subway station? Moscow "Vorobyovy Gory" ("Lenin") is well known. The station was opened on January 12, 1959. She was sheltered by the lower tier of the Luzhnetsky metro bridge. In 1983, signs of destruction of the base object began to be observed: poor quality concrete. It could not withstand the vibration of the bridge from the impact of intense auto-flow.

Stopping traffic for two or three years (to eliminate the problem) meant leaving a huge part of the city without communication with the center (you can’t jump over the Moscow River). The way out was found in the construction of two bypass mini-metro bridges (1984) and the station was quietly closed for repairs.

But it was not possible to fulfill the plan, the destruction only worsened. At the end of the 90s, the question was no longer about the reconstruction of Sparrow Hills, but about the repair of the entire Metro Bridge. The restoration proceeded in stages: first, the upper level was transformed, then it came to the lower, station level. Waves of crises complicated and delayed the work. The station only opened on December 14, 2002. The train tracks and the platform were separated, so now the "mountains" do not shake.

Dreaming is not bad

Those who like to tickle their nerves are interested in: “Abandoned metro stations in Moscow? How to get? I so want to go where it’s scary, dark, where the gray dust of the underworld lies. It is difficult to imagine regular organized trips through complex, for the most part unsafe, secret subway paths. But to Stalin's bunker (a real object), they say, private companies take curious people (pleasure, however, is not cheap).

But you shouldn't be especially upset: the legends of the Moscow subway are global in nature, including a train with pale "men in gray" - phantoms of prisoners who died at work and were buried in the tunnel; the restless soul of a lineman wandering at night along his working paths; the figurine of the dead girl, appearing in the black opening of the tracks; giant mutant rats; some entities pushing people to death, putting trips. You can learn about all this in detail without entering the abandoned metro stations in Moscow. Excursions cover other places of the metro.

Let's go to the subway!

As soon as the roar of approaching or departing trains subsides, the guides tell the spontaneous groups interesting stories about metro stations. Although waiting out the noise means getting stuck for a long time, and the tour time is not infinite. So experts often shout out information.

How many interesting things are hidden in the Moscow metro! Almost every meter of the excursion route reveals secret after secret to the grateful listener. They are innumerable: architectural, political, paleontological, artistic… Pages that tell about abandoned metro stations in Moscow are “flipping through”. There are "chapters" about the current ones and Everything is interesting! No time to be bored!

Didino is a village near Revda. He is famous for the fact that a wonderful tunnel is being acquired in his district. Actually, the starting point for the sortie is not the Didino station itself, from which it is about three kilometers to the tunnel, but the next one is 1590 kilometers.

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The tunnel is remarkable in that it is a marvelous relic of the tsarist era - construction began in 1910, and the first steam locomotive passed through it in 1913. Its architecture is rather curious - it is an oval truncated from below. On both sides of the tunnel, near the entrance, there are niches at a height of about five meters; earlier, small figurines could have been placed in them - based on the fact that fragments of white marble can be found inside the niches. The height of the tunnel is approximately six meters, the height along the pediment is nine.

It can be noted that the ice does not melt directly in the tunnel itself even in August
entirely - there are rather large areas of icing. In the spring, you can contemplate stalactites and stalagmites - which, however, is not entirely true - just ice growths, covered from above with a small amount of dripping saltpeter.

There is an extensive drainage network in the tunnel - the upper drainage has a length of about two hundred meters and is filled with small adits, roughly speaking, which were used to relieve rock pressure - this can be seen from the numerous holes drilled in the rock. The lower drainage is much larger - its length to the side
o.p. 1590 Kilometer about five hundred meters, about two hundred meters passed towards Didino. In the lower part of the drainage there are a number of places laid during, probably, repairs - apparently, the rock has collapsed and in order to avoid further destruction, such passages were filled up.

Inside, there are also areas that were repaired with blue concrete -
yes, yes, the very one that was invented for the construction (however, not formed) of the Palace of Soviets. There are also two rather interesting mines, which can be climbed from the lower part of the system - up about four meters. There are two drawbacks in such an enterprise: the first is the unreliability and unsteadiness of the ladders, the second is a certain amount of ore gas that accumulates in the mine, also apparently made to reduce pressure on the tunnel.

The tunnel was closed in 1990... the first, apparently due to the high risk of exploitation - pretty decent pieces of masonry had already been washed out with water, and bricks were falling out of the ceiling. Upstairs used to be military unit, which can still be seen a large number trenches and trenches, as well as for some artifacts, such as lamps, aluminum bowls, coal batteries, and so on.

It is noteworthy that many pillboxes have also been preserved, in which you can climb and
dig out the bones of cattle. The defensive system is curious in that it covers not a tunnel, but a mine, which is located on the territory of this part - its depth is about 46 meters, it passes through the upper and lower drainage systems. In general, the place can be used with a sense of good arrangement in order to learn how to go down low and simple, but still industrial, gee-gee, walls - the height of the pediment can be chosen: from two to eight meters, as well as in order to go down a couple of times into the drainage, try yourself in this difficult task.

The tunnel itself will probably not last long: it will still stand for a couple of years. From the dilapidated state of the ceiling, I strongly recommend taking helmets with you. along the way, many broken stones were found.

According to publications, there is a small area of ​​forest with heavily twisted tree trunks and abnormally tall grass. Birds do not fly here, animals do not enter. And a person who has wandered into this area sharply worsens his state of health and has a feeling of insurmountable, unreasonable fear. Although in practice only trees with
twisted stems.

The tunnel was built in 1913 (branch Yekaterinburg - Druzhinino). Its length is 1126 m. It was decommissioned in the early 90s due to an emergency condition (although you can’t tell from it). Apparently, the main problem is the availability of water in the tunnel, especially in the eastern part, which the existing drainage system cannot cope with. The tunnel itself is a system of three tunnels: the main one, through which the trains went, the ventilation one, located above the main one, and having an exit to the outside - a mine, 40-50 meters deep, and a drainage one dug under the main one, and a little to the left, if you look to the side Art. Didino. To protect the tunnel in the 60s, bunkers and related infrastructure were built over it. The bunkers have been preserved in excellent condition. However, now you will see for yourself.

DOT. Perfectly preserved, inside there are loopholes on all sides for shelling the surrounding area. We found at least two surviving pillboxes. On one of them on the concrete date: 25-07-61.


The exit of the ventilation shaft to the surface. We are now right above the tunnel. Previously, apparently, as expected, the exit was closed from precipitation, now only a frame of logs has been preserved.


And here is the mine itself. Looking down is, frankly, creepy. It is impossible to accurately determine the depth, the bottom is barely visible, but I think there are from 40 to 50 meters. Some hotheads descend into the shaft on a rope, and fall into the ventilation system, from which you can get into the main tunnel.


Entrance to the tunnel from the side of about. settlement 1590 km, western. Literally 100 m away is the village of summer residents of the same name. If you take the train, it's best to just go to the "kilometer", because, they say, it takes a couple of kilometers from Didino to the tunnel.


The vaults amaze with their monumentality and good preservation. Approximately to the middle of the tunnel - maybe more, maybe less, dry. Small rubble underfoot. (If you go from 1590 km.) No traces of sleepers or rails. You can drive right up to the tunnel by car of almost any cross-country ability and drive through it!


Right and left architectural elements in the form of semicircular buttresses.


The battlements at the top are reminiscent of a medieval castle.


There are niches in the walls to the right and left, apparently to hide from the train.


There are karst deposits on the ceilings of the niches.


Tunnel vault


drainage channel.


Here the drainage channel "goes" into the drainage tunnel, which is 3 - 4 meters lower than the main tunnel.


Going down, we just get into the drainage system. This is also a tunnel, only a small one. Also lined with stone. It was probably not very convenient to build it - you can’t straighten up to your full height. You can only walk on it by crouching. Water flows along the bottom - it does not freeze! Expanse for those who like to climb all sorts of underground channels. Moreover, exits from drainage system are already outside the tunnel near the western and eastern entrances.


Approximately from the middle of the tunnel, ice begins, the thickness of which increases. The bright spot is the opposite exit. By the way, it is visible from the very beginning. But because the tunnel curves slightly, the light spot is shaped like a sickle.


Remains of electric lighting fittings on the walls.


Ice leaks. Many of them are broken, which is a pity.


This niche here gives an idea of ​​the thickness of the ice, if you remember that an adult can stand in it.


The square hole in the ceiling is the exit (or entrance?) of the ventilation shaft, remember, up there on the surface? Turning off the lights, you can see a slight reflection from the street in it.


Another interesting object: a square entrance through which you get into a small room, from which you can climb up the stairs to the ventilation system.


True, the steps are filled with ice, so that we did not dare to climb them.


Interesting artifact - element electrical circuit, or a disconnector, or a fuse system.

One hundred and fifty meters from large area Piazza del Plebiscito in the center of Naples is the door to a passage that descends almost thirty meters underground and leads to the Bourbon tunnel, consisting of 530 meters of gigantic passages, large caves and narrow channels. built in mid-nineteenth century, the tunnel was abandoned after World War II and only discovered again in the early 2000s.

(Total 8 photos)

The tunnel was conceived as an escape route from the royal palace by King Ferdinand II of Bourbon of the Two Sicilies. He was very afraid that he would be overthrown by the population of Sicily and Naples, who were prone to unrest during the turbulent period of the Napoleonic wars. Since 1816, there have been three uprisings against the power of the Bourbons, and especially cruel - in 1848, when the revolutionaries came to power for 16 months. Returning to the throne in 1849, Ferdinand II hurriedly rewrote the constitution and began to make plans for a safe retreat in case the people rebelled again.

The king ordered an escape tunnel dug into the volcanic rock under the streets of Naples, using parts of the existing Carmignano aqueduct, which was built in early XVII century. The tunnel was supposed to connect the royal palace with the military barracks in what is now Morelli Street. But Ferdinand II died in 1859 before the tunnel was completed. The tunnel was abandoned. A little later, volunteer troops came to Sicily, and it was included in the new kingdom of Italy.

The tunnel went unused until the early 1930s, when it became a warehouse for confiscated and smuggled cars. During World War II, the underground space was turned into a military hospital and bomb shelter. After the war, the tunnels became a dumping ground for wartime debris. Construction debris, old TVs and refrigerators, broken cars and motorcycles, as well as fascist marble statues were dumped here. Then the tunnel was sealed and forgotten about.

This is a translated article. It talks about underground abandoned tunnels in US cities that were supposedly built in the 19th century or earlier. These tunnels were used to transport goods, mail, people, they were huge drains for underground reservoirs, collecting rain water or sewer tunnels. The tunnels are built with a large margin of safety, very soundly, they can stand for another century. The entrances to many tunnels are walled up; only a very limited circle of people knows about the existence of some of them. Modern history unable to explain how throughout the United States, under major cities, suddenly so many tunnels appeared at the same time long BEFORE the industrial revolution and the era of great discoveries of the second half of the 19th century began.
abandoned underground tunnels-silent witnesses of the bygone civilization that built them.
At that time, people lived in harmony with nature, animals and flora, planet Earth was a paradise for people and all living things, and all communications were prudently taken away under the surface ....

abandoned underground tunnels Chicago with narrow gauge railroads.

Underground tunnels have been found under many US cities.
Here is just a short and far from complete list.

Boston, MA

Brooklyn, New York
Abandoned subway under Atlantic Avenue

Like Boston, New York has its own artifacts of abandoned underground tunnels, of which the most famous is the cave tunnel under Atlantic Avenue. Commissioned by Commander Cornelius Vanderbilt (yes, Vanderbilt) in 1844 , the tunnel connected 2 stations. The trains did not have to be horse-drawn before the trains were connected to the engines. Steam locomotives were banned in 1861, the entrances to the tunnel were sealed, and everyone forgot about this tunnel and steam locomotives. According to legend, the engines of these trains were buried there.

Chicago, Illinois.

Lots and lots of tunnels.
Chicago has more underground tunnels than Boston and New York combined.
There 6 different types tunnels: Pedway, STA tunnels, Tunnel cable car, cargo tunnel, water tunnel and "deep" tunnel. The cable car tunnel is dated “L” and is 20 meters underground, it fell into disuse after the city switched to using elevated trains that passed over drawbridges (1906)."Deep" tunnel, or tunnel and reservoir, at a depth of 117 meters, to accommodate rainwater runoff. The transport tunnel, unique in Chicago, was designed for small trains and was used to transport coal and freight between prominent buildings inside the railroad ring.

Dallas, Texas
Underground railway and cargo tunnels.

Back in the Roaring 20s, these rail tunnels were used to conveniently transport goods between the Santa Fe Freight Terminal and the Mod District. They "possibly" (definitely) smuggled moonshine back and forth to the university club during Prohibition. Dallas also has moderately used pedestrian tunnels linking major downtown buildings below street level. Originally designed to relieve street congestion and save people from the hot Texas sun, they are now an urban joke and get in the way of actual street development.

Detroit, Michigan (Detroit, MI)
Forbidden / Underground railway tunnel

The people of Detroit love to drink, and it makes sense that many of the capital's cars were able to carry booze through the network of tunnels during Prohibition, when booze was illegal. One of clear examples is Tommy on 3rd street. Their secret passage leads to the Forth Street Presbyterian Church (across the road), and probably also to part of the Underground Railroad. Of course, this served Tommy well during Prohibition, as his Purple Ganges establishment always met the demand of the surrounding population for the gin that was hidden in the bathroom.

Indianapolis, Indiana
Catacombs under the building of the old market.

Hidden under the historic Indianapolis Market, the network of catacombs was once used as "cold" storage to keep perishables fresh before the advent of refrigeration. Brick arched structures resemble Ancient Rome, and some of the passages are still in good shape despite being over 130 years old. (Note: not as old as Rome.) Big bonus: City Market staff offer limited tours of the catacombs on Saturdays from May to October, and on Halloween.

Los Angeles, California
Forbidden tunnels.

11 miles of old tunnels under LA and they've supported the City of Angels for a long time. They were first used as service tunnels and then banned and were used to transfer liquor during Prohibition. (Real story: City Hall ran a mafia supply chain.) Obviously, if you go to the Hall of Records on Temple Street, there is an elevator that will take you there... Los Angeles also has an abandoned subway and horse-drawn tunnels, but most of these underground passages were sealed due to the fact that they are unsafe.

Louisville, Kentucky.

Several tunnel systems.

Louisville (called the Gateway to the South) was created in 1778 and boasts a lot of history, many layers of which are hidden under the streets. There are tunnels leading to the cave Sauerkraut, which were used as warehouses for the Lakeland Lunatic Asylum. Other tunnels branch out from abandoned civil defense shelters and connect with the basements of buildings in the city center. Even the Southern Baptist Theological Seminary is rumored to have its own walkway from the president's house to the secret building across the street, but that's most likely just an old steam tunnel.

Minneapolis / St. Paul, Minnesota

Abandoned hydropower facilities and tunnels for the production and movement of illegal goods.
Twin Cities (Minneapolis and St. Paul), especially St. Paul, riddled with a web underground labyrinths, caves and tunnels, and these man-made features date back to the 1840s. There are seven various systems in Saint Paul and most of them are former communication corridors. In addition, there are old industrial tunnels under Ford's assembly shops and giant hydroelectric pipes below the mill level of the historic Pillsbury. Not wanting to be left behind by other cities' Prohibition secrets, Minneapolis has its own gateway from the Belmore housing estate to the liquor industry.

New York, New York
New York Water Tunnel No. 3

New York City's sprawling underbelly has more tunnels than jets, from underground Prohibition-era bars (R.I.P. Chumley) to abandoned MTA routes. And those secret passages under the Waldorf Astoria. However, most people are unaware of the existence of Tunnel 3. Under construction since 1970 (planned completion date 2020), this pipeline will eventually link NYC to Upstate New York for water supplies, and will pass through Yonkers and central park and end at the Astoria Hotel. (Don't worry, Tunnels 1 and 2 are already doing the same.) First planned in 1954 (what??!!??), pundits dubbed TN3 "the greatest non-military construction project in history Western civilization. " Cool, but not quite. This is the most major project capital construction in the history of the city. (This is more appropriate.)

Philadelphia, Pennsylvania.
Abandoned city branch of the railway tunnel.

City of Brotherly Love has long history, and a significant part of it is buried under the sidewalks
The tunnel closed in 1992, nearly 18 meters wide, the cave can fit six Philadelphia & Reading freight train tracks, who made deliveries to where these plants once stood. Good news/bad news: every few years, the planners start talking about doing something about this tunnel, but it doesn't go beyond talk.. Go figure it out. There were ideas of turning it back into a commercial railroad, adapting it to a different mode of transit (car, bus, commuter rail) or converting it to a park.

Portland, Oregon.
shanghai tunnels

These tunnels may be more general plan well known, but they have a cool name and a crazy story.

Back in the "seafaring" days of past centuries, the word "shanhiking" meant the kidnapping of people, who were then forced to work on board the ship for free (real slavery). Type "Portland Underground" into a search engine and you'll get whole line of interconnected cellars and brick canals through which all the movements that made this illegal recruitment practice possible took place. The gullible dudes would be lowered through the door traps, driven into captivity, and then taken to the tiny cage where they were held. Many artifacts remain, such as the aforementioned hatches and cages for keeping kidnapped people, and you can get about it full view on the proposed tour.

Salt Lake City, Utah

The tunnel system of Salt Lake City does not have the dirt and rundown of other underground passages, but it is still full of secrets and intrigue. On the basic level, the confirmed tunnels originate at Temple Square and connect the buildings of the downtown churches so that the congregants of these churches can escape the weather (and avoid being seen in public) when moving. The story gets tacky: conspiracy theorists are very sure that the tunnels currently lead to the central assembly yard in Salt Lake City and the city's county buildings. When questioned about this by church officials, they remain silent on the matter. (Sinister music plays.)

San Francisco, California
Abandoned railway tunnels for trains and old freight transport tunnels.

The hidden depths of San Francisco are vast , and several urban explorers have documented their findings... after they saw wastewater sewers, rats, and walked waist-deep in cold water. Along with other major cities, SF has its fair share of underground passages through which liquor was delivered during Prohibition and passageways to brothels. houses from escape routes, as well as abandoned communication and railway tunnels. You can find these antique railways to Market Street via old station Mooney, but it has the faeces and rats and cold sewage we mentioned. To the north of the city center, there is a tunnel that has been used to transport soldiers and supplies since the early 1900s, this tunnel was in operation until 1990. Like Portland, the city of Fog was involved in "shanhiking" and the old ship saloon has a hatch to a secret basement , which is naturally connected to a network of other tunnels. (More sinister music plays.)

The construction of so many tunnels is a colossal work and colossal funds.
They were certainly not built so that 20th-century church members could shelter from the elements or be used during Prohibition to transport illegal liquor or organize kidnappings.
The tunnels were used for:
- transportation of people and goods;
- sewerage;
- drainage to underground reservoirs;
-possible shelter;
- warehouses and industrial premises.


railway junction


traffic jams


congestion of trucks on the roads.

Overloaded railway junctions, traffic jams, both cars and trucks are idle.
When we build roads and bridges, nature suffers, animals and plants die, there is nothing to breathe from exhaust gases.
Please note that all the tunnels were dug by machine, that is, a tunnel-boring shield was used. (TBM-Tonnel Boring Machine) of different sizes, therefore, the tunnels were built from small to giant sizes.

Meet Crossrail's giant tunneling machines

The walls of the tunnels are either concreted or lined with bricks. You can imagine the capacity of brick factories and the amount of energy they consume. Such tunnels could only be built on gratuitous non-fuel energy.
Part is used for its intended purpose: metro, transportation of goods and mail.
But a lot of underground tunnels are abandoned, they don’t find or don’t want to find a use for them, preferring to poison the air, torment people in traffic jams, destroy all life on the planet, and most importantly, use vehicles that run on petroleum products, gasoline or diesel fuel.

We often ask: what was the transport of a bygone civilization, why are there so few artifacts, where did the old machines and equipment go? They are hidden in underground tunnels, sealed, access to them is closed.
Those who govern us intend to do so forever, they do not need unnecessary questions or inconvenient physical evidence that has survived from the time of a bygone civilization.
The very fact that underground tunnels are hidden from us all over the world, and not just in the USA, clearly proves that we were taught fake history, and our real history is sealed, like those abandoned tunnels.