Photo By: Kevin Morgan

The eastbound Zephyr crosses over South Boulder Creek just west of the shortest tunnel in the Tunnel District. Tunnel 29 is only 78 feet long. This area essentially marks the start of the Tunnel District as trains head east from Cliff. Email Questions or Comments to the Webmaster. User Comments (0) No comments posted yet. Click Here to add the first one!

9 views 0 comments Sunday, June 07, 2026 at 4:54:04 PM image date Location Information City or County and State Boulder County, CO Subdivision Moffat Tunnel (UP) Milepost or Control Point Tunnel 29 (MP 36.4, 75 ft) Train Information Railroad Amtrak Model P42DC Primary Unit Number AMTK 182 Paint Scheme Amtrak Phase 5b Symbol AMT6-06 Train Type California Zephyr (Amtrak) Photo Information Camera Make/Model DJI / Mavic 3 Pro [FC4382] ISO 110 886 Flash Did Not Fire Focal Length 70 mm Shutter 1/500 seconds Aperture f/2.8

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