National monument

Organ Pipe Cactus National Monument

Organ Pipe Cactus National Monument is a national monument run by the National Park Service in Pima County, Arizona. Entrance is $25 per vehicle, good for 7 days. It is open 24 hours a day, year-round. It has 2 developed campgrounds, from $16 a night.

Current notices posted by the managing agency. Checked Sept. 30, 2026.

  • Closure: Temporary Road Closures in Effect The following roads are temporary closed: West Border Road (Roosevelt Reservation) from the Lukeville Port of Entry west to Quitobaquito Springs, East Border Road (Roosevelt Reservation) from the Lukeville Port of Entry east to the Santa Rosa Mountains, and Camino de Dos Republicas. See Alerts for more info. Since July 31, 2026. Until July 31, 2027.

Check current closures and fire restrictions for Organ Pipe Cactus National Monument on the managing agency's own page.

Organ Pipe Cactus National Monument
Photo: Klaus Eltrop, CC BY-SA 3.0

Organ Pipe Cactus National Monument map

Organ Pipe Cactus National Monument boundary from USGS PAD-US or the managing agency, simplified for display. Not for navigation or legal boundaries.

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Fire restrictions

No fire restriction recorded for this unit as of Sept. 30, 2026. Restrictions change with the season, so check the current orders below before you go.

Common questions

Entrance costs $25 per vehicle, $20 per motorcycle, and $15 per person on foot or bicycle, each valid 7 days. An annual pass for Organ Pipe Cactus National Monument costs $45. Interagency (America the Beautiful) passes are accepted. The park takes no cash: pay by card or buy a pass online.
Yes. Organ Pipe Cactus National Monument is open 24 hours a day, year-round.
Yes. Organ Pipe Cactus National Monument has 2 developed campgrounds. Sites cost $16 to $20 a night. Campsites must be reserved ahead, up to 180 days in advance. Twin Peaks and Alamo Canyon via Recreation.gov same day to 6 months ahead; busy Dec-April. Twin Peaks generators 8-10 am and 4-6 pm (as of September 29, 2026). Stays are limited to 21 days per campground. Across the whole park, the limit is 28 days in any 365-day period. No hookups; showers available. Generators may run from 8 a.m. to 6 p.m. Camping outside campgrounds is not allowed.
Pets are allowed in Organ Pipe Cactus National Monument. On trails, only Palo Verde Trail and Campground Perimeter Trail allow them.
No. Launching, landing or operating a drone is not allowed in Organ Pipe Cactus National Monument.

Fees, passes, and hours

Entrance costs $25 per vehicle, $20 per motorcycle, and $15 per person on foot or bicycle, each valid 7 days. An annual pass for Organ Pipe Cactus National Monument costs $45. Interagency (America the Beautiful) passes are accepted. The park takes no cash: pay by card or buy a pass online.

Organ Pipe Cactus National Monument is open 24 hours a day, year-round.

Sources: nps.gov/orpi/planyourvisit/fees, checked 2026-09-28; nps.gov/orpi/planyourvisit/hours, checked 2026-09-28.

Entrances and visitor centers

  • Kris Eggle Visitor Center10 Organ Pipe Drive, Ajo, AZ 85321520-387-6849

Source: nps.gov/orpi/planyourvisit/directions, checked 2026-09-29.

Camping in Organ Pipe Cactus National Monument

Organ Pipe Cactus National Monument has 2 developed campgrounds. Sites cost $16 to $20 a night. Campsites must be reserved ahead, up to 180 days in advance. Twin Peaks and Alamo Canyon via Recreation.gov same day to 6 months ahead; busy Dec-April. Twin Peaks generators 8-10 am and 4-6 pm (as of September 29, 2026). Stays are limited to 21 days per campground. Across the whole park, the limit is 28 days in any 365-day period. No hookups; showers available. Generators may run from 8 a.m. to 6 p.m. Camping outside campgrounds is not allowed.

Reserve a campsite

Source: nps.gov/orpi/planyourvisit/camping, checked 2026-09-29.

Pets

Pets are allowed in Organ Pipe Cactus National Monument. On trails, only Palo Verde Trail and Campground Perimeter Trail allow them.

Source: nps.gov/orpi/learn/management/superintedents-compendium, checked 2026-09-29.

Scenic drives

  • Ajo Mountain Drive

Getting there

  • Nearest town: Ajo, AZ

Source: nps.gov/orpi/planyourvisit/directions, checked 2026-09-29.

Trails

  • Visitor Center Nature Trail(0.1 mi round trip, easy)ADA brick path with exhibits and Quitobaquito pupfish pond.
  • Campground Perimeter Trail(1 mi round trip, easy)Level Twin Peaks loop; western quarter-mile ADA accessible.
  • Desert View Trail(1.2 mi loop, easy)Sunrise/sunset loop with plant exhibits and benches.
  • Palo Verde Trail(2.6 mi round trip, easy)Pet-friendly dirt link between visitor center and Twin Peaks.
  • Arch Canyon(1.2 mi round trip, easy)Easy climb into a lush canyon; double arch visible from the start.
  • Estes Canyon(3.2 mi round trip, moderate)Wash crossings and switchbacks; good for birding; links to Bull Pasture.
  • Bull Pasture(3 mi round trip, strenuous)500 ft climb to cliffs with views into Mexico and the monument.
  • Victoria Mine(4.4 mi round trip, moderate)From Twin Peaks to historic silver mine store, equipment, and shafts.

Source: nps.gov/orpi/planyourvisit/hiking, checked 2026-09-29.

What to see

  • Scenic driveAjo Mountain DriveScenic loop accessing Arch Canyon, Estes Canyon, and Bull Pasture trailheads.
  • ArchArch CanyonDouble arch visible from an easy canyon trail off Ajo Mountain Drive.
  • WildlifeOrgan pipe cactus standsNamesake columnar cacti surround Twin Peaks Campground and desert trails.
  • Historic siteVictoria MineHistoric silver mine site reached by a moderate 4.4-mile round-trip hike.

Source: nps.gov/orpi/planyourvisit/hiking, checked 2026-09-29.

Public lands next to Organ Pipe Cactus National Monument

Measured between the units' boundaries as mapped in USGS PAD-US. Distances are straight line, not driving.