ColoradoRailfan.com Contemporary Railfanning in Colorado
Railroad photograph
Photo by: Kevin Morgan
There isn't a cloud in the sky this morning as an on-time westbound Zephyr climbs Big Ten Curve. The Phase 3 heritage unit, AMTK 145, is on the point of the train along with AMTK 5.
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Monday, October 19, 2026 at 09:28:05
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 145

Paint Scheme
Amtrak Phase 3 (Heritage) 		Symbol
AMT5-18 		Train Type
California Zephyr (Amtrak)

Additional Unit Number(s)
AMTK 5 		   

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

Focal Length
24 mm 		Shutter
1/1250 seconds 		Aperture
f/2.8