That's the main piece that he brought from Arizona - it's a 12 foot layout. He's got others ready that circle around the room. It took over a year to do the big piece (which is why he brought it). Most of that time spent laying track and doing all the electrical work - it's entirely computer controlled - and you can see the wiring under the platform. Will share some pics when it's all put back together. Hard to see the detail because it's built for his working level - at 6'6" that puts it out of my reach