If you were to come upon a mountain on a brilliant and sunny day, and if there was an old fashioned coal fired train that followed a long and winding path completely up that mountain, and if you were to get into that train and then, once way up one side of the mountain, dangled yourself out the window and looked back down the path whence you just came...this is what you would see. Stare at it for awhile and you'll feel like you're flying. Flying too darn close to a train maybe, but still flying.