ColoradoRailfan.com Contemporary Railfanning in Colorado
Railroad photograph
Photo by: Kevin Morgan
A classic shot from Big Ten, as the Zephyr climbs up the north rim of the curve, toward the wind break at the top. AMTK 203, and its very unique paint scheme, lead the way.
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Monday, June 08, 2026 at 09:45:38
image date


Location Information

City or County and State
Arvada, CO

Subdivision
Moffat Tunnel (UP)

Milepost or Control Point
Big Ten Curve (MP 19.5 to MP 20.2)



Train Information
Railroad
Amtrak 		Model
P42DC 		Primary Unit Number
AMTK 203

Paint Scheme
Amtrak (Special) 		Symbol
AMT5-07 		Train Type
California Zephyr (Amtrak)

Photo Information
Camera Make/Model
Hasselblad / Mavic 3 / Mavic 3 Pro [L2D-20c] 		ISO
100
898 		Flash
Did Not Fire

Focal Length
24 mm 		Shutter
1/2000 seconds 		Aperture
f/2.8