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Happy 100th Birthday! US National Parks in Photos

Isle Royale National Park

Isle Royale National Park Archive

(Image credit: National Park Service)

Near Lake Michigan, Isle Royale National Park was created on April 3, 1940.

Joshua Tree National Park

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(Image credit: Linda & Dr. Dick Buscher)

Found near Twentynine Palms, California, Joshua Tree National Park was established on October 31, 1994.

Katmai National Park and Preserve

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(Image credit: NPS.)

To preserve the area destroyed by the Katmai and surrounding volcanos, the Katmai National Park and Preserve in Alaska was created in 1918.

Kenai Fjords National Park

national parks, electric Christmas tree

(Image credit: National Park Service)

The Alaska National Interest Lands Conservation Act established Kenai Fjords National Park on December 2, 1980.

Kings Canyon National Parks

Sequoia and Kings Canyon National Parks

(Image credit: Scott Toste)

Kings Canyon National Park, established in March 4, 1940, lies east of Fresno, California.

Kobuk Valley National Park

Kobuk Valley National Park anniversary

(Image credit: NPS)

North of the Arctic Circle, the Kobuk Valley National Park was established on December 2, 1980 to preserve a vast ecosystem.

Lake Clark National Park and Preserve

Lake Clark National Park and Preserve NPS Archive

(Image credit: National Park Service)

Lake Clark National Park and Preserve in Alaska was established in 1980.

Lassen Volcanic National Park

Lassen Peak

(Image credit: Michael Clynne/USGS)

Lassen Volcanic National Park in northeastern California was originally established as two National Monuments in 1907 by President Theodore Roosevelt.

Mammoth Cave National Park

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(Image credit: Jeff Kubina)

Mammoth Cave National Park was established on July 1, 1941 to preserve the cave system and scenic river valleys in south central Kentucky.

Mesa Verde National Park

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(Image credit: National Park Service)

In Montezuma County, Colorado, some of the best preserved Ancestral Puebloan archeological sites in the United States are found at Mesa Verde National Park, which was established on June 29, 1906, by President Theodore Roosevelt.