Organ Pipe Cactus National Monument

Organ Pipe Cactus National Monument is a national monument run by the National Park Service in Arizona.

In the park service’s words

Look closely. Look again. The sights and sounds of Organ Pipe Cactus National Monument, an International Biosphere Reserve, reveal a thriving community of plants and animals. Human stories echo throughout the Sonoran Desert, chronicling thousands of years of desert living. A wilderness hike, a scenic drive, or a night of camping will expose you to a living desert abounding with hidden life.

From the National Park Service (public domain).

Things to do

• Hike the Historic Old County Road! (3 to 5 Hours): Enjoy scenic views along an 8-mile one-way hike as you explore a historic wagon road through the Sonoran Desert!
• Hike the Estes Canyon/Bull Pasture Loop (1 to 3 Hours): The moderate Estes Canyon trail provides ample wildlife and wildflower viewing opportunities while a steep, strenuous climb up the Bull Pasture spur trail will reward visitors with spectacular views of the Sonoran Desert.
• Hike the Senita Basin Loop (2 to 3 Hours): Easy loop trail located in a low elevation area on the south side of the Puerto Blanco Mountains. This lush basin is one of the few places you can see all three of the park’s columnar cacti coexisting: saguaro, organ pipes, and the senita cacti. The most impressive groves of senita cacti are along the road into Senita
• Drive the Ajo Mountain Loop (2 to 5 Hours): The Ajo Mountain Drive is a 21-mile (34 km) graded, one-way dirt road that gives visitors an excellent overview of the landscape and flora or Organ Pipe Cactus National Monument. The drive takes approximately 2 hours, and has been designed so that a passenger car, driven with caution, may be taken over it safely. Trail
• Hike to Lost Cabin (4 to 5 Hours): Looking for a lengthier hike that showcases Organ Pipe’s mining history? This 8 mile (12.9 kilometers) round-trip hike includes the Victoria Mine site and an old stone mining house known as Lost Cabin.
• Hike to Victoria Mine (3 to 4 Hours): Experience Organ Pipe’s mining history by hiking to Victoria Mine, one of the oldest prospecting sites in southwest Arizona and the heart of gold and silver mining in the Organ Pipe area.
• Unearth Dripping Springs Mine (2 to 3 Hours): Stumble upon an old copper mine while exploring along the trail in the Puerto Blanco Mountains!
• Hike Alamo Canyon (1 to 2 Hours): The Alamo Canyon Trail follows an old road to a historic ranch house and corral, and provides ample wildlife and wildflower viewing opportunities.

Fees and hours

Entrance fee: $25 per vehicle. The America the Beautiful pass covers it.

Hours: Open 24 hours, every day. The monument is open 365 days a year and park roads and trails are open 24 hours. There is no gate at the monument entrance; entrance fees are paid for at the visitor center. There is no dispersed camping allowed anywhere in the monument. US-Mexico Border hours are 6 am-8 pm. The main season for visitors is December through the end of April, during the mild winter months and wildflower season. Campgrounds may fill during this time; check Recreation.gov for campsite availability.

Camping

Getting there

The Kris Eggle Visitor Center is located on Highway 85 approximately 25 miles south of Why, AZ and 5 miles north of Lukeville, AZ, just before the US-Mexico Border.

Drive times run from the airport to Zion Canyon Visitor Center, estimated with OSRM routing on OpenStreetMap roads at normal speeds; allow extra for traffic, stops and construction.

Miles are straight-line distances.

Visitor centers

• Kris Eggle Visitor Center: Daily, 9:00AM - 5:00PM. The monument is always open. All trails, scenic drives, and campgrounds are accessible to the public 24 hours a day. The Kris Eggle Visitor Center is open daily, 7 days a week, 8:00 am - 4:00 pm from May 1st to October 31st, and switches to 9:00 am - 5:00 pm from November 1 to April 30th.

Weather

Summer months are hot, with temperatures exceeding 100F during the day and night-time temperatures in the high 70's. Winter months are milder, with temperatures in the 70s during the day and 30's to 40's in the evening.

From the National Park Service (public domain).

Know before you go

Drones are banned at almost every park site, and you may not take rocks, plants or artifacts. Pets must be on a leash no longer than 6 feet where they are allowed. Bring no firewood from home.

Nearby

The nearest national park is Saguaro, about 139 miles away in a straight line.

Sources

• National Park Service Data API: Organ Pipe Cactus National Monument (public domain)
• Official website

Last checked 1 November 2026.