Image: Rock slide detector UPRR Sierra grade at "Cape Horn", Colfax, CA
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Description: Trackside rock slide detector on the UPRR Sierra grade at "Cape Horn" above Colfax, CA
Title: Rock slide detector UPRR Sierra grade at "Cape Horn", Colfax, CA
Credit: Original digital photograph by the uploader, Centpacrr (Bruce C. Cooper)
Author: Centpacrr (Digital image)
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes
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