The Georgetown Loop (Colorado)

Georgetown is a silver-mining town at 8,500 feet near the crest of the Rockies. Hooked somehow to the rear of a four-car passenger train is a camera that pans the scenery and, when the train goes around curves, looks ahead to see the engine and passenger cars: the passengers wave hundreds of white handkerchiefs out of the train's left-side windows for the benefit of the camera. The town comes into view; the tracks are above the town, so the camera looks down on dozens of modest rooftops as it pans the area..gptfims.com