
The USSR is a country that occupied a huge territory. Over the entire period of its existence, many beautiful places have appeared here, and in relation to some, legends, beliefs and myths are still circulating. In addition, many classified facilities and enterprises were built in the Soviet Union. They have survived, of course, in part, and to our time, but were abandoned, since after the collapse of the state, they turned out to be unnecessary to anyone. One of the most secret objects of that time is the KBT (large-caliber ballistic track).
What is the track and why was it built

KBT is a sealed barrel, in the middle of which there are special sensors. They are installed along the entire length of this barrel. In total, its length is five hundred meters, two hundred of them were intended for additional equipment. The "cannon" was installed in a separate building, which is resistant to various seismic disasters.

Initially, this design was built in order to test the corresponding aircraft in conditions close to space. For example, atmospheric conditions were simulated as close as possible to those existing on Mars. After that, the behavior of the apparatus was studied according to the indicators of the sensors. A gas cannon was used to simulate the effort required to "dispatch" a specific object. The speed with which she fired reached 3,600 kilometers per hour.

The sensors recorded the movement of the test object. The results were sent to research institutes and a computing center that were nearby. There, specialists processed the information received and analyzed it. There were also provided for emergency situations such as the burst of the "gun". As an additional protective device, pillars with concrete shields were installed. The body of the object is also reinforced. For this purpose, reinforced concrete was used.

After the collapse of the Union of Soviet Socialist Republics, KBT was closed, and all specialists were fired. From that moment on, no one returned to the tests. Naturally, during this time, the structure began to collapse, cracks appeared on it. It is very dangerous to stay inside the trunk, although some people who want to find ferrous metal are not afraid of the possibility of being piled up.

In our time, there is no need for such structures. All possible situations are worked out by means of computer modeling. But a few decades ago, the design was really unique and very significant for the state.
It will be no less interesting to know what was produced during the USSR at an underground plant in Siberia, and how it is used today.