View of the forest belt from the window of a moving car. Men are marching through the marshy area. Bulldozer clears the road in the forest. The driver in the cab operates the levers. Poles placed on the cleared strip. Experts talk. Panorama of the pole drill, the faces of the builders. Master for the levers of the pole drill. A tractor is driving through the forest; driver in the tractor cab. The builders dine in the forest, the cook pours them soup. Builders in mosquito hats are walking along the road, approaching a construction site. Builders are sawing logs. General view of the erected power line. The welder is working. The foreman repairs the drilling rig. The mast is lowered on the drilling rig. Men walk across the field, smoke.