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Lassen Volcanic National Park
Published January 29, 2006
Although nearly a century has passed since its last eruption, signs of volcanic activity are still visible in this false-color image.
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Lava Beds National Monument
Published October 16, 2005
The landscape is a recently formed set of basaltic lava flows that creates a foreboding landscape of sharp obsidian, cinder and spatter cones, twisted rivers of solidified rock, pit craters, and a network of caves from lava tubes.
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Black Canyon
Published October 2, 2005
Black Canyon of the Gunnison National Park is a small park that encompasses the steep-walled canyons of the Gunnison River, which drains snowmelt from the Rocky Mountains in western Colorado.
Mt. Rainier, Washington
Published September 26, 2005
A clear summer day over Washington state provided the International Space Station crew the chance to observe Mt. Rainier—a volcano that overlooks the Seattle metropolitan area and the 2.5 million people who live there. In addition to its presence on the Seattle skyline, Mt. Rainier also looms large among volcanoes in the United States.
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Effigy Mounds National Monument
Published September 11, 2005
The park was created in October 1949 to protect a small area along the banks of the Mississippi River where Native Americans built earthen mounds for millennia.
Tonto National Monument
Published September 4, 2005
The most striking feature is Roosevelt Lake, an artificial lake created by the construction of Roosevelt Dam across the Salt River. The National Monument is surrounded by the Tonto National Forest, which includes low plains, desert scrubland, and alpine pine forests.
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Saguaro National Park
Published July 24, 2005
The park encompasses about 37,000 hectares of the Sonora Desert.
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Arches National Park
Published May 8, 2005
Situated in Utah, the park is home to 2,000 arches and windows in rock, as well as rock spires and pinnacles.
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Mammoth Cave National Park
Published May 1, 2005
Archaeological evidence indicates that American Indians living in the area began exploring the cave system in the late Archaic period, between 5,000 and 3,000 years ago. European settlers first found the caves in 1798.
Dinosaur National Monument
Published April 3, 2005
The paleontologist Eric Douglass made the first discoveries here in 1909, and President Woodrow Wilson proclaimed it a national monument in 1915.
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Crater Lake National Park
Published January 23, 2005
It one of the oldest parks in the United States, created in 1902 by President Theodore Roosevelt.
Delaware Water Gap
Published January 9, 2005
The park runs roughly 40 miles along the Delaware River and the Appalachian Mountains, which are immediately adjacent to the river.
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