Photo By: Kevin Morgan

MRL 4306 is the second unit of three on this eastbound oil train, descending down Big Ten Curve and approach an Approach (yellow over red) signal at west end of Rocky. Email Questions or Comments to the Webmaster. User Comments (0) No comments posted yet. Click Here to add the first one!

18 views 0 comments Sunday, September 27, 2026 at 5:56:36 PM 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 BNSF Model ES44AC Primary Unit Number BNSF 6139 Paint Scheme BNSF New Image Symbol Train Type Unit Oil Additional Unit Number(s) MRL 4306     Photo Information Camera Make/Model Hasselblad / Mavic 3 / Mavic 3 Pro [L2D-20c] ISO 220 900 Flash Did Not Fire Focal Length 24 mm Shutter 1/240 seconds Aperture f/2.8

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