unbearable conditions, with a pick and a shovel, with primitive... in the forties, work on the dusyalinskyafter the great victory , even the construction of an underground passage to sakhalin began, but after stalin, the amur mainline to baikal was abandoned again, and the dusyalinsky tunnel was delayed ice. the trunk of the tunnel froze right under the arch; it was only possible to break through it in the eighties, when the all-union youth construction project was in full swing. an important event was observed in the eastern section of bawa. the doseolinsky tunnel, the first highway tunnel, came into operation. komsomol members built the western section of bam to tynda, and the eastern section from tynda to komsomolsk on the mura was erected by railway troops. the restoration of the duseolinsky tunnel was entrusted to a special battalion. the ice was melted by jet engines. we tried it, it worked very good, it quickly began to melt, but the high temperature began to burst the tubes in... inside, the whole thing was canceled, they began to hollow it out manually, well, within a year they cl