Tygh Grade Summit
Tygh Grade Summit (el. 2697 ft.) is a mountain pass in Oregon traversed by U.S. Route 197 and is located about 6.5 miles north of Tygh Valley.[1] References
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Tygh Grade Summit
Tygh Grade Summit (el. 2697 ft.) is a mountain pass in Oregon traversed by U.S. Route 197 and is located about 6.5 miles north of Tygh Valley.[1] References
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