A film about the construction of the northernmost tunnel by the BAM builders. 1 hour - Yakut taiga. The train passes over the bridge. Coal quarry. Tunnel. Omelyanenko is talking with the head of the site, with the engineer. Flyer. Workers in the tunnel. A mechanical shovel loads the rock onto the machine. 2 hours - Omelyanenko, engineers and geologist in the tunnel. Laser machine. Drilling the walls of the tunnel. Explosion in the tunnel. People at the rally.