Being in the subway is both interesting and disturbing. The feeling of something unusual often visits many people when they descend underground on an escalator. It has a special spirit, a special wind, its own atmosphere … Passenger stations are always different in design. As a rule, they are stately and massive. Still, to keep a vault from the earth’s layer is a serious design decision. While waiting for a train, a person often looks at the wall opposite, where traffic patterns of trains and various advertisements are located. But some pay attention to the fact that there is a door. And whoever remarks will surely ask the question: "Where is she leading?" And curiosity is tearing apart - you can’t see it …
Mystery always attracts
So, a person will not stand long in his thoughts. Trains just fly on rails between stations. And the man who was attracted to the mysterious, tightly closed door, soon forgets about it, plunged into new thoughts. But here is a new passenger. He, too, became interested in the unknown entrance. What is there?
It turns out that the metro is stuffed with wires and cables. They are all laid along the tunnels. To stretch the cable, you need to turn a few tens of meters into a whole opening. To install a new cable, a specialist inserts it into a new pipe and pushes it further, aligning it to the required state.
