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Onion Portage Archeological District : ウィキペディア英語版 | Onion Portage Archeological District
The Onion Portage Archeological District encompasses a major archaeological site in Kobuk Valley National Park in northwestern Alaska. The site is a deeply stratified site, at which archaeologists have located nine complexes ranging dating from approximately 6500BC to AD1700. The site has been of critical benefit for the study of Arctic cultures, and is used to determine the cultural chronology of the region. It was declared a National Historic Landmark District in 1978.〔 ==Setting== The Onion Portage site is located on the northern banks of the Kobuk River, about upriver from its mouth at the Chukchi Sea. It is located at a point where the river makes an S-shaped bend. Above the site is a sandy knoll, from which material is washed onto the site from deeply eroded gullies.〔(【引用サイトリンク】title=A Stone Age Campsite at the Gateway to America )〕
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