Organ Pipe Cactus National Monument


Overview | Climate/Map | Description | Things to Do | Camping/Lodging | Nearby

Organ Pipe Cactus

Organ Pipe Cactus National Monument celebrates the life and landscape of the Sonoran Desert. Here, in this desert wilderness of plants and animals and dramatic mountains and plains scenery three unique desert habitats converge within 500 square miles. The Monument exhibits an extraordinary collection of plants of the Sonoran Desert, including the Saguaro and Organ Pipe Cactus, a large cactus rarely found in the United States.

There are also many creatures that have been able to adapt themselves to extreme temperatures, intense sunlight and little rainfall. Sonoran desert plants and animals, found nowhere else in the United States, are protected throughout the Monument and elsewhere in Arizona.

Wildflower Reports

Organ Pipe Cactus NM Map - Map to help explore the park.

General Information

Seasons / Hours

The Kris Eggle Visitor Center is open daily from 8am to 5pm Mountain Standard time. The Center is closed all federal holidays between April 1 and December 31. However, even if the Kris Eggle Visitor Center is closed, the remainder of the park is open 24 hours a day, including all holidays. The campgrounds, roads and trails are subject to periodic closures. Please check with the Kris Eggle Vistor Center for more information.

Visitation is highest in February, March and April; lowest in June, July, August and September. 338,603 people visited the monument in 2007.

Rates & Fees

  • $8.00 entrance fee per private vehicle or motorcycle.
  • $4.00 for each pedestrian or bicyclist.
  • No fee upon presentation of Senior/Golden Age/Access/Eagle passes, National Park Pass, America the Beautiful pass or Organ Pipe Cactus Annual Pass and identification. Fee is valid for seven (7) consecutive days.
  • Twin Peaks (Main) Campground. Open daily, with self-registration available when entrance station is unoccupied. Fee Sites are first-come, first-served; no reservations.
  • Alamo Primitive Campground. Fee - Obtain required permit at visitor center. Tent, pickup camper, and vans only. Water not available. No generators. No vehicle to exceed 15 ft. in length. Limited to four tent sites which may fill early especially in winter. No advance reservations.
  • Backcountry Camping. Fee- Obtain required permit at visitor center. Campsite must be at least 1/2 mile away from roads, structures. No advance reservations.
  • Commercial bus: NOTE: these vehicles are too long to travel monument roads. No entry fee is charged for use of Kris Eggle Visitor Center, picnic area or nature trail.
  • Other commercial vehicles: “These parks …. charge each individual in a commercial group the per-person fee. The driver and guide will not be charged an entrance fee. Passes are accepted for entry as stated on the back of the pass.”

The Kris Eggle Visitor Center at Organ Pipe is a good place to begin your visit.

The Kris Eggle Visitor Center at Organ Pipe is a good place to begin your visit.


Kris Eggle Visitor Center

Hours: 8:00 am to 5:00 pm daily, year round, except on major holidays.
Features: Information, exhibit area, video or slide presentation, bookstore. Programs/Events: Ranger programs, including guided hikes, are given January through March, and occasionally in December and April.


Motels, gasoline, groceries, trailer parks, laundries and other services are available in Lukeville, Why, Ajo and Sonoyta, Mexico.

Topographical map at Kris Eggle Visitor Center provides visitors another way to understand the geography of Organ Pipe.

Topographical map at Kris Eggle Visitor Center provides visitors another way to understand the geography of Organ Pipe.


The Kris Eggle Visitor Center lobby, auditorium, exhibits, and bookstore area are fully accessible. For the visually impaired there is a relief map of the monument and a touch table with a variety of items. Drinking fountains outside the building are fully accessible. Restrooms in a nearby building are accessible with assistance.

Behind the Kris Eggle Visitor Center is an accessible 100-yard, hard-surfaced nature trail suitable for scooters and wheelchairs. This level, gently winding trail offers close views of many plants and birds native to the Sonoran Desert.

The Twin Peaks Campground's restrooms and drinking water facilities are fully accessible, with some sites equipped with picnic tables designed for wheelchair and scooter users.

For more information on accessibility at Organ Pipe NM, please click here.


  • Beware of the cactus and some dangerous wildlife. There are six varieties of rattlesnakes as well as gila monsters and scorpions. These animals play an important part in the ecology of the desert and should not be harmed.
  • Visitors should be prepared for desert walking. A hat, sunscreen, comfortable and sturdy clothing and shoes, and a flashlight are necessary. Avoid hiking mid-day in summer.
  • If you get hurt or lost, stay in one place to conserve water and energy. Signal for help; three blasts on a whistle is a well-recognized distress call. In remote areas, a large "X" marked on the ground by any means visible from the air will signify that help is needed. Carry a signal mirror.
  • Carry enough drinking water, one gallon (four liters) per person per day.
  • Most visitor injuries in Organ Pipe result from car accidents. Drive within the speed limit and watch for animals grazing along the shoulders of the road, especially at night.
  • Pack out all litter.
  • International Border Vehicle Barrier: In 2004, Organ Pipe Cactus National Monument undertook the work of constructing a vehicle barrier along the south boundary, which also happens to be the international border with Mexico. It stretches 23 miles of the southern boundary. It was designed to stop vehicles from driving around the US customs offices in Lukeville on Hwy 85, or up through the desert wilderness instead of Hwy 85. Respect the boundary. Visitors should be aware that drug smuggling routes pass through the park. If you see any activity which looks illegal, suspicious, or out of place, please do not intervene. Note your location. Call 911 or report it to a ranger as quickly as possible.

10 Organ Pipe Drive, Ajo, AZ 85321
(520) 387-6849



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