This 408-foot tunnel was one of the most difficult challenges in the entire construction of Going-to-the-Sun Road, carving through Piegan mountain.
Glacier National Park
Source: U.S. Department of the Interior, National Park Service
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This 408-foot tunnel was one of the most difficult challenges in the entire construction of Going-to-the-Sun Road, carving through Piegan mountain.
Glacier National Park
Source: U.S. Department of the Interior, National Park Service
ORGANIZATIONS IN THIS STORY
LETTER TO THE EDITOR
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