While on our Walk n’ Shoot down at Auraria Campus, we hung out around by one of the Light Rail stations and waited for the train to come around to get some long exposures of it passing by.  The effect was a fantastic stream of light as the train passed by.  The train came by a few time to give us some practice.  This shot was 4 second exposure, ISO 100 at ƒ/14 with camera seated upon a tripod.