Narrow Gauge Country: Having grown up in Maine, to me narrow gauge railroading was anything where there was two feet between the rails. But even just one afternoon on the Georgetown Loop west of Denver, Colo. proved to me that the Rockies is Narrow Gauge Country. Georgetown Loop R.R. 2-6-2 No.12 pulls a load of tourist across the Devil's Gate High Bridge, in what would be the engines last summer, at least for now, on the former Colorado and Southern.