When the mountain is lost in a blizzard and your flanger crew is trapped in an avalanche, it's time to call in the big guns - the legendary Rotary Snow Plow! These programs gives you a thrilling behind-the-scenes look at how Union Pacific called the rotary into use (for the first time this century!) to clear the rails of Donner Pass from Roseville to Truckee during the largest snow dump of the decade in 2011. Part two of this exciting program follows the crew and the snow fighting force of Union Pacific as they use every weapon at their disposal to battle over 52 feet of snow! 1 hr.