Organ Pipe Cactus National Monument in southwestern Arizona protects 330,689 acres of Sonoran Desert wilderness along the U.S.–Mexico border — the only place in the United States where the organ pipe cactus grows wild. Proclaimed a national monument in 1937, the park was designated a UNESCO International Biosphere Reserve in 1976 in recognition of its outstanding desert ecosystem biodiversity. The monument harbors 28 species of cactus, over 270 species of birds, and rare mammals including the Sonoran pronghorn, one of the most endangered land mammals in North America. The Tohono O'odham people have lived in and around the monument's lands for centuries and maintain cultural connections to the landscape. The monument's location on the international border has made it a focal point in immigration and border security debates.
📚 Learn More at NPSHistory.com →Organ Pipe Cactus National Monument in AZ is one of hundreds of National Park Service sites where interpretive content has been flagged under Secretary's Order 3431. This directive requires parks to review materials that could be considered negative about past or living Americans — a standard that threatens the factual historical record these sites were created to preserve.
Why this matters: Organ Pipe Cactus National Monument is one of 466+ National Park Service sites where historically accurate interpretive content has been flagged under Secretary's Order 3431. Over 300 million people visit national parks each year. For many — especially schoolchildren — these visits are their first and deepest encounter with American history.
Organ Pipe Cactus National Monument in AZ is one of hundreds of National Park Service sites where interpretive content has been flagged under Secretary's Order 3431. This directive requires parks to review materials that could be considered negative about past or living Americans — a standard that threatens the factual historical record these sites were created to preserve.
Why this matters: Organ Pipe Cactus National Monument is one of 466+ National Park Service sites where historically accurate interpretive content has been flagged under Secretary's Order 3431. Over 300 million people visit national parks each year. For many — especially schoolchildren — these visits are their first and deepest encounter with American history.
Organ Pipe Cactus National Monument in AZ is one of hundreds of National Park Service sites where interpretive content has been flagged under Secretary's Order 3431. This directive requires parks to review materials that could be considered negative about past or living Americans — a standard that threatens the factual historical record these sites were created to preserve.
Why this matters: Organ Pipe Cactus National Monument is one of 466+ National Park Service sites where historically accurate interpretive content has been flagged under Secretary's Order 3431. Over 300 million people visit national parks each year. For many — especially schoolchildren — these visits are their first and deepest encounter with American history.
sun damaged interp signs. Have other sun damaged directional/safety signage as well
Organ Pipe Cactus National Monument in AZ is one of hundreds of National Park Service sites where interpretive content has been flagged under Secretary's Order 3431. This directive requires parks to review materials that could be considered negative about past or living Americans — a standard that threatens the factual historical record these sites were created to preserve.
Why this matters: Organ Pipe Cactus National Monument is one of 466+ National Park Service sites where historically accurate interpretive content has been flagged under Secretary's Order 3431. Over 300 million people visit national parks each year. For many — especially schoolchildren — these visits are their first and deepest encounter with American history.
contains text that involve human factual actions
Organ Pipe Cactus National Monument in AZ is one of hundreds of National Park Service sites where interpretive content has been flagged under Secretary's Order 3431. This directive requires parks to review materials that could be considered negative about past or living Americans — a standard that threatens the factual historical record these sites were created to preserve.
Why this matters: Organ Pipe Cactus National Monument is one of 466+ National Park Service sites where historically accurate interpretive content has been flagged under Secretary's Order 3431. Over 300 million people visit national parks each year. For many — especially schoolchildren — these visits are their first and deepest encounter with American history.
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