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Chehalis Gap : ウィキペディア英語版 | Chehalis Gap 〕 | traversed = U.S. Route 12, fmr. U.S. Route 410, Puget Sound and Pacific Railroad | location = Washington, United States | range = Coast Range | coordinates = | topo = }} The Chehalis Gap is a gap in the Coast Range of Washington State between the southernmost foothills of the Olympic Mountains called the Satsop Hills, and the Willapa Hills. The gap is a major geographic feature of the northwestern United States. Other geographic features in the gap include Chehalis River, Grays Harbor, and Grays Harbor National Wildlife Refuge in its estuary. U.S. Route 12 runs through the gap from Elma near Capitol State Forest to Aberdeen on Grays Harbor near the coast, paralleled by the former U.S. Route 410 and Puget Sound and Pacific Railroad. ==Formation== The broad valley in the gap is considered outsized for the river it now carries, the Chehalis River, theorized to be due to its enlargement during the Pleistocene ice age when it carried meltwater from mile-high glaciers in what is now Puget Sound.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Chehalis Gap」の詳細全文を読む
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