- State: AZ
- NPCA Region: Southwest
- Est. Date: 1937
Air & Climate Data
View the Polluted Parks ReportVisibility
Moderate Concern
Health
Moderate Concern
Nature
Significant Concern
Climate
Significant Concern
This section of the Sonoran Desert near the border between Arizona and Mexico features massive cacti, colorful birds and rock arches. An International Biosphere Reserve and a federally designated wilderness area, this park preserves the only large concentration of organ pipe cacti in the country, as well as hundreds of other native plant species, such as saguaro, cholla, mesquite and palo verde trees, and ocotillo. Hike on the park's nine scenic trails or take a drive on the 21-mile Ajo Mountain Drive to experience the vibrant desert landscape.
-
Magazine Article
A Thorny Question
Why some saguaros grow more arms than others — and why it matters.
-
Blog Post
9 Not-So-Cute Endangered Animals That Live in Our Parks
Celebrate Endangered Species Day with these curious critters
More about Organ Pipe Cactus
Filter By
-
Read more about Don't Divide Our Habitats, Ecosystems and Communities
NPCA at Work Don't Divide Our Habitats, Ecosystems and Communities Oppose new walls and fencing along the U.S.-Mexico border.
-
Read more about Great American Outdoors Act Success Stories
Fact Sheet Great American Outdoors Act Success Stories The Great American Outdoors Act is providing crucial funding – up to $6.65 billion over five years – to fix our national parks’ crumbling roads, decaying buildings, outdated water systems and many more repair needs. This bill, along with other funding sources, is ensuring our parks can continue to welcome millions of visitors each year and protect the natural and cultural resources that tell our nation’s history.
-
Read more about Position on Border Wall Construction at Organ Pipe
Policy Update Position on Border Wall Construction at Organ Pipe NPCA submitted the following position to members of the House Committee on Natural Resources Subcommittee for Indigenous Peoples ahead of a hearing scheduled for February 26, 2020.
-
Read more about Position on H.R. 1865 and H.R. 1158, FY20 Appropriations
Policy Update Position on H.R. 1865 and H.R. 1158, FY20 Appropriations NPCA submitted the following letter to the Senate prior to an anticipated floor vote on December 19th, 2019.
-
Read more about Position on FY2020 Border Wall Appropriations
Policy Update Position on FY2020 Border Wall Appropriations NPCA submitted the following position to the Senate and House of Representatives during appropriations negotiations in December 2019.
-
Read more about The Border Wall Is Destroying What This Park Was Created to Protect
Blog Post The Border Wall Is Destroying What This Park Was Created to Protect A firsthand account of the devastation at Organ Pipe Cactus National Monument in Arizona.
-
Read more about How a Border Wall Could Harm Two Desert Parks: A Closer Look
Blog Post How a Border Wall Could Harm Two Desert Parks: A Closer Look The federal government could soon install new bollard wall on portions of the southern border, including 78 miles of barriers near National Park Service land.
-
Read more about Laws Waived for Border Wall Construction
Resource Laws Waived for Border Wall Construction The Department of Homeland Security is waiving the following laws to build proposed sections of border wall in Arizona and California near national park lands.
-
Read more about Trump Administration Announces Plan for Destructive Border Wall Through National Parks
Press Release Trump Administration Announces Plan for Destructive Border Wall Through National Parks Border wall would damage delicate park landscapes, block wildlife migration, and disrupt the flow of water.
-
Read more about Testimony: Border Wall Issues Forum
Policy Update Testimony: Border Wall Issues Forum Written testimony of Christina Hazard, NPCA Associate Director for Government Affairs, before the House Committee on Natural Resources at the Border Wall Issues Forum on January 15, 2019.
-
Read more about The Census Taker
Magazine Article The Census Taker Alex Mintzer has been counting ant colonies at Organ Pipe Cactus National Monument for more than 30 years.
-
Read more about Position on H.R. 4760 & H.R. 6136
Policy Update Position on H.R. 4760 & H.R. 6136 NPCA submitted the following position to members of the House of Representatives ahead of floor votes expected on June 21, 2018.
-
Read more about Already Short-Staffed Park Service Asked to Support Border Patrol Security
Press Release Already Short-Staffed Park Service Asked to Support Border Patrol Security This decision could have serious consequences for national parks already struggling with a reduction in staff.
Donate
Preserve Our Parks
Make a tax-deductible gift today to provide a brighter future for our national parks and the millions of Americans who enjoy them.
Donate Now