Rio Grande Southern #20 (4-6-0) takes a spin on the turntable and is seen between two of the Colorado Railroad Museum's four Galloping Geese motors.

Rio Grande Southern #20 (4-6-0) lets off steam as it heats up for the evening's run of the Polar Express.

Rio Grande Southern #20 (4-6-0) puts out an impressive plume as it runs around the grounds of the Colorado Railroad Museum.

Rio Grande Southern #20 (4-6-0) makes a lap pulling vintage passenger cars around the grounds at the Colorado Railroad Museum in Golden, Colorado.

Rio Grande Southern #20 (4-6-0) gets ready to leave the roundhouse at the Colorado Railroad Museum.

Rio Grande Southern #20 (4-6-0) passes Santa's workshop at the Colorado Railroad Museum in Golden.

Rio Grande Southern locomotive #20 (4-6-0) meets the Colorado Railroad Museum's Rio Grande Southern #7 Galloping Goose as it runs on the grounds in Golden, Colorado.

Rio Grande Southern #20 (4-6-0) heads towards the depot at the Colorado Railroad Museum where it will lash up with vintage passenger cars for the museum's Polar Express train.

Rio Grande Southern #20 (4-6-0) leaves the roundhouse at the Colorado Railroad Museum. She will lead that day's Polar Express train, which will run passengers around the museum grounds in Golden,... (more)

At the Roundhouse

RGS 20 shimmers in the morning light on the Cumbres and Toltec Scenic Railroad.

Rio Grande Southern #20 (4-6-0) runs past the vintage rolling stock at the Colorado Railroad Museum in Golden, Colorado.

Rio Grande Southern #20 (4-6-0) was built in 1899 by the Schenectady Locomotive Works and is a treat to see operate on the grounds of the Colorado Railroad Museum.

The Colorado Railroad Museum’s Rio Grande Southern #20 takes a lap around the museum grounds. The engine was built by the Schenectady Locomotive Works in 1899 for the Florence & Cripple Creek Ra... (more)

The Colorado Railroad Museum's Rio Grande Southern #20 pulls passengers around the large museum grounds in Golden Colorado. The engine (4-6-0) was built in 1899 by the Schenectady Locomotive Work... (more)