Most of the members of “Near Sighted Narrow Gaugers” model the narrow gauge lines which ran through Colorado's mountainous terrain from the late 1800s and well into the 1900s. Colorado is renowned for its 3' narrow gauge lines which allowed for snaking along narrow ridges and deep canyons requiring smaller radius curves. Famous narrow gauge railroads included the Colorado & Southern, Denver, South Park & Pacific, Denver & Rio Grande Western, and the Rio Grande Southern. Some of the smaller narrow gauge lines running through Colorado are the Colorado Central, Denver, Boulder & Western, and the Florence & Cripple Creek. There was even a small branch of 3' narrow gauge line running on the Crystal River Railroad west of Aspen, CO.