Big Boy 4014 back!

It weighs 1,200,000 pounds. That's 600 tons. It's 132 feet long. The main drive wheels are 68" in diameter. That's 6'6". 25 were originally and exclusively built for the Union Pacific and 4014 is the only one in operation. I actually have an HO model of the UP Challenger 3985 made by Rivarossi. It's the next size down from the Big Boy. Although calling it a "size down" is somewhat of a stretch.