The sun has already set in the mountain town of Silverton, Colorado, on the evening of August 23, 2010, with both wood and coal smoke filling the dusky air. Denver and Rio Grande Western narrow gauge 2-8-0 No. 315, a member of D&RGW’s C-18 class, sits on the main line near the depot with a freight. Next to this train in Silverton’s passing siding is the Eureka and Palisade No. 4, a wood-burning 4-4-0 that has just arrived in town after a trip to Cascade. Both trains are part of the Durango and Silverton Narrow Gauge Railroad’s Railfest 2010 activities.