File:St Paul Pass Tunnel.jpg
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Summary[edit]
DescriptionSt Paul Pass Tunnel.jpg |
English: The St. Paul Pass Tunnel was a railway tunnel in the northwest United States at St. Paul Pass, on the Montana-Idaho border. |
Date | |
Source | Own work |
Author | Wyked111 |
Camera location | 47° 23′ 24.72″ N, 115° 38′ 54.6″ W | View this and other nearby images on: OpenStreetMap | 47.390200; -115.648500 |
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The tunnel was constructed as part of the Milwaukee Road's "Pacific Coast Extension" project, undertaken in the first decade of the 1900s. It expanded its concentration of railroad lines in the upper Midwest area of Milwaukee-Chicago-Minneapolis-St. Paul across the Rocky Mountains to Washington, ending at the Seattle-Tacoma area on Puget Sound. The construction occurred late in the historical era of American railroading; it was the last transcontinental line built. Surveying began in 1901 and continued until 1909, when a final golden spike was driven in Montana at Garrison. The St. Paul Pass was chosen because of the stands of marketable white pine timber and also because there were no other competing railroads nearby. The tunnel's official length was 8,771 feet (1.661 mi; 2.673 km), it was the second-longest on the Milwaukee main line from Chicago to Seattle, behind only the 2¼-mile (3.6 km) Snoqualmie Tunnel in Washington.
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This image was uploaded as part of Wiki Loves Monuments 2021.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 23:05, 30 October 2021 | 2,268 × 4,032 (2.66 MB) | Wyked111 (talk | contribs) | Uploaded own work with UploadWizard |
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Metadata
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Camera manufacturer | |
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Camera model | Pixel 4a (5G) |
Exposure time | 3,719/1,000,000 sec (0.003719) |
F-number | f/1.73 |
ISO speed rating | 59 |
Date and time of data generation | 11:25, 31 August 2021 |
Lens focal length | 4.38 mm |
Width | 4,032 px |
Height | 2,268 px |
Orientation | Rotated 90° CCW |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | HDR+ 1.0.377695977zd |
File change date and time | 11:25, 31 August 2021 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.31 |
Date and time of digitizing | 11:25, 31 August 2021 |
Meaning of each component |
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APEX shutter speed | 8.07 |
APEX aperture | 1.58 |
APEX brightness | 5.41 |
APEX exposure bias | 0 |
Maximum land aperture | 1.58 APEX (f/1.73) |
Subject distance | 4,294,967,295 meters |
Metering mode | Center weighted average |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 579 |
DateTimeOriginal subseconds | 579 |
DateTimeDigitized subseconds | 579 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
Scene type | A directly photographed image |
Custom image processing | Custom process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 2.02 |
Focal length in 35 mm film | 27 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Distant view |
Reference for direction of image | Magnetic direction |
Direction of image | 263 |
Structured data
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31 August 2021
47°23'24.7"N, 115°38'54.6"W
0.003719 second
1.73
4.38 millimetre
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