A Grant C 16 narrow gauge 2 - 8 - 0 heads east out of the Colorado foothills towards Denver. The C 16 class was constructed by a number of builders to a common design and the wheel configuration proved very popular for the narrow gauge railways in Colorado as it provided for a relatively large boiler with acceptable axle loads, suitable for light track and heavy grades. The year is about 1905 and narrow gauge rails were laid all through the mountains.