Union Pacific Big Boy #4006 sits on display at the Museum of Transportation. This engine type, built strictly for the Union Pacific is well represented as 8 of the 25 built survived the torch to ... (more)
North bound UP 4006 leading UP 4271 runs along the basalt lava flows and the Portneuf River, south of Inkom. Pocatello is only ten miles distant and then on to the northwest. This pair of SD70M's ... (more)
With still yet another couple of miles to go before reaching the summit of Cajon Pass, UP 4006 east climbs the grade past milepost 58.2 on the Cajon Sub.