National Park to Park Highway
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The National Park to Park Highway was an auto trail in the United States in the 1920s. It followed a large loop through the West, serving many National Parks:
- Crater Lake National Park
- Glacier National Park
- Grand Canyon National Park
- Kings Canyon National Park
- Lassen Volcanic National Park
- Mesa Verde National Park
- Mount Rainier National Park
- Petrified Forest National Park
- Rocky Mountain National Park
- Sequoia National Park
- Walnut Canyon National Monument
- Yellowstone National Park
- Yosemite National Park
- Zion National Park