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Dorothy FireCloud, superintendent for Montezuma Castle, Montezuma Well and Tuzigoot national monuments, stands with staff and volunteers in front of Montezuma Castle. In 2016, the National Park Service will celebrate 100 years. (Photo by Bill Helm)

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Montezuma Castle staff looks ahead to 100th anniversary of National Park Service in 2016

The National Park Service has been planning for its 100th anniversary since 2006, when then-Secretary of the Interior Dirk Kempthorne launched the National Park Centennial Initiative.