Durango & Silverton Narrow Gauge RR 481 on the trestle near Silverton, CO on September 24, 2005.

DSNG RR 481 crosses the animas river trestle approaching Silverton on September 25, 2005.

When have you last seen green flags? The Durango and Silverton Narrow Gauge RR 481 has a following second section indicated by the green flags as it crosses the Animas River trestle near Silverton, CO on September 24, 2005. Although flags and marker lights were once common, now they are seldom seen except on "trips to yesterday'.