It's hard to imagine two more different forms of rail locomotion than these. On the right is the jewel-like Eureka, a classic 4-4-0 American type dating from 1875. On the left is a Rio Grande Southern Galloping Goose, one of seven kitbashed by the RGS in their Ridgeway, CO shops in the 1930's as a means of coping with tough economic times and declining ridership. Both the Eureka and the Goose evaded the scrapper and lived to delight fans into the 21st Century. About the only other thing they have in common is the (narrow) gauge.
Here both are running as extra trains on the Durango and Silverton as evidenced by the white flags. The occasion is Railfest 2009.