Image: Ptarmigan tunnel

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Description: Ptarmigan Tunnel, Glacier National Park, Montana
Title: Ptarmigan tunnel
Credit: http://www.hscl.cr.nps.gov/insidenps/report.asp?STATE=MT&PARK=GLAC&STRUCTURE=&SORT=&RECORDNO=338
Author: National Park Service inventory
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

Image usage

The following 3 pages link to this image:

List of bridges on the National Register of Historic Places in Montana
National Register of Historic Places listings in Glacier County, Montana
National Register of Historic Places listings in Glacier National Park

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