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The Great Kobuk Sand Dunes Valley National Park, in Alaska

The Great Kobuk Sand Dunes Valley National Park, in AlaskaThe Great Kobuk (9)The Kobuk Valley National Park, in Alaska, is one of the most remotely located national parks in the world. The Kobuk Valley National Park contains, not one but three active sand dunes: the Great Kobuk Sand Dunes, the Little Kobuk Sand Dunes and the Hunt River Dunes, that together cover 20,000 acres of land, but at one time covered as many as 200,000 acres immediately after the retreat of Pleistocene glaciation.

The dunes were believed to have formed by the grinding action of glaciers and subsequent deposition of sand by glacial-outwash streams emptying into what was once a large lake in the Kobuk valley, some 150,000 years ago. The 25-square-km Great Kobuk Sand Dunes constitute the largest active sand dunes found in the Arctic.
The Great Kobuk Sand Dunes Valley National Park, in AlaskaThe Great Kobuk (1)

The Great Kobuk Sand Dunes Valley National Park, in AlaskaThe Great Kobuk (2)
The Great Kobuk Sand Dunes Valley National Park, in Alaska 
The Great Kobuk (3)
The Great Kobuk Sand Dunes Valley National Park, in Alaska 
The Great Kobuk (4)
 The Great Kobuk Sand Dunes Valley National Park, in Alaska
The Great Kobuk (5)
The Great Kobuk Sand Dunes Valley National Park, in Alaska 
The Great Kobuk (6)
The Great Kobuk Sand Dunes Valley National Park, in Alaska 
The Great Kobuk (7)
 The Great Kobuk Sand Dunes Valley National Park, in Alaska
The Great Kobuk (8)

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