What is Bonito Campground?
Sunset Crater erupted around the year 1085, the youngest volcano in Arizona, and the cinders it threw and the lava it poured still lie bare on the ground at the foot of the cone. Bonito Campground sits at the edge of that flow, 44 sites in ponderosa at 6,925 feet on the Forest Service side of the monument’s entrance station, close enough that the black rock of the Bonito Lava Flow is a short walk from the tents. The campground is unusually well finished for the Coconino: paved roads and spurs, a table, fire ring and grill at every site, potable water and vault toilets including barrier-free units. No hookups; rigs over 42 feet are turned away. A site is $34, half the sites are on recreation.gov, and the drive from Old Town is about 2 hours 40 minutes.
Its real amenity is the neighborhood. The Lava Flow Trail, a mile loop through squeeze-ups and cinder gardens, and the climb up Lenox Crater are minutes away; the 35-mile loop road continues north through the grasslands to Wupatki National Monument, where a 100-room pueblo from the 1100s stands beside a ballcourt, and returns to US 89. One $25 vehicle fee covers both monuments for seven days. Just before Bonito on the same road, O’Leary Group Campground has three reservation-only sites for 50 to 75 people at $171 to $199 a night, with its own water and toilets. The sky at night is among the darkest in the state; the stargazing guide has nothing this good within three hours of Scottsdale.
What you get is a base camp with water at the gate of a volcano. What you do not get is showers, hookups, a trail you can take the dog on, or, in the fall of 2026, a campground at all: it closed six weeks early for road work and comes back in May.
How to camp Bonito right
Reserve half, race for half. $34 per night for one vehicle and up to eight people; $10 for a second vehicle; day use $12. 22 sites are on recreation.gov up to six months ahead and 22 are first come, first served; the first-come half fills by Friday afternoon from Memorial Day on. Senior and Access passes take half off the camping fee. The monument’s $25 is separate and is covered by an America the Beautiful pass.
Get there. Loop 101 north to I-17, I-17 north through Flagstaff onto I-40 east for a mile, then US 89 north for about 12 miles to Forest Road 545 (Sunset Crater Road) on the right. The campground is 2 miles in, on the left, just before the entrance station. All paved. About 2 hours 40 minutes from Old Town. GPS units sometimes route you onto unpaved forest roads from US 89; ignore them and wait for the signed turn. Flagstaff has the last groceries.
Know the 2026 closure. Crews are replacing culverts on FR 545 between US 89 and the entrance station from September 21 to October 21, 2026, to fix drainage damage left by the 2022 Tunnel Fire. The campground closed on September 20 and the road reopens to vehicles on October 22. The monument stayed open via the back way through Wupatki, with an unpaved detour on FR 776 that is not for RVs. Expect Bonito back in early May 2027.
Pick the season. Normally early May to mid-October. June is dry and clear; July and August bring thunderstorms that put on a show over the cinder fields and are dangerous on the open lava; September is best. Nights are cold all season, and frost in June is not a surprise.
Pick the site. The north side of the loop, where the lava flow is a short walk through the trees and the San Francisco Peaks fill the sky to the west.
Water and toilets. Potable water and vault toilets. No showers, no dump station.
Walk the volcano right. Do the Lava Flow Trail at first light, when the cinders are cool and the squeeze-ups cast shadows, then drive the loop to Wupatki with the sun behind you and come back in the evening with the Painted Desert lit to the east. There is no shade on the lava and no water on the monument’s trails. Climbing Sunset Crater itself has been prohibited since 1973; Lenox Crater is the cone you may climb.
Dogs. Leashed in camp. Inside the monument they are confined to parking areas and paved stretches, and the lava cuts paws.
Skip it if you want a campground that is the destination. Bonito is a base, and both monuments are day trips measured in hours. Pair it with Lockett Meadow across US 89 for the aspens, Walnut Canyon to the south for the cliff dwellings, or Lava River Cave west of Flagstaff for the other end of the same volcanic field, and the weekend fills itself. For the big climb, Humphreys Peak is 40 minutes away.
The volcano Hollywood wanted to blow up
Around 1085, give or take a few years, a vent opened on the plateau northeast of the San Francisco Peaks and did not stop for months. Tree-ring work once put the start in the winter of 1064 to 1065; the geologists and archaeologists now say about 1085. The eruption built a cinder cone 1,120 feet high, sent the Bonito flow 2.5 kilometers northwest and the Kana-a flow nearly 10 kilometers northeast, and dropped ash and lapilli over more than 2,100 square kilometers. The people living on that ground were the Sinagua, dry farmers in pit houses, and the eruption buried their fields and homes under cinders. They moved. Many went north to the grasslands around Wupatki, where the cinder mulch held rainwater and the 1100s became a boom: the 100-room pueblo, the ballcourt, the trade goods from the coast and Mexico that the monument there displays. It was the only volcanic eruption in what is now the United States that people watched and then rebuilt around, and thirteen tribes still count the crater as theirs.
The Americans nearly destroyed it for a movie. In 1928 the film company Famous Players-Lasky, making Zane Grey’s Avalanche, proposed to detonate explosives on the cone’s flank to film a landslide. Harold Colton, who had just founded the Museum of Northern Arizona, and the people of Flagstaff raised a public outcry, and the plan died. The outcry did not. On May 26, 1930, President Hoover proclaimed Sunset Crater National Monument, 3,040 acres carved out of the Coconino National Forest and placed under the Park Service, which already ran Wupatki, a monument since 1924. The forest kept the land around the gate, which is why the only campground is a Forest Service one and why you pay two agencies.
The monument then had to protect the cone from its admirers. For forty years a trail went to the rim of Sunset Crater, and every boot that climbed it slid back a step in the cinders; by the early 1970s the trail had become a gully that would not heal. In 1973 the Park Service closed the summit for good, built the Lenox Crater trail on the older cone next door as the climb people were allowed, and left the scar on Sunset Crater’s flank as the lesson. The Lava Flow Trail at the cone’s base became the walk, and Bonito Campground, at the edge of that flow, the place to sleep; the Coconino does not publish a construction date for the campground, and I could not find one. In 1990 Congress renamed the place Sunset Crater Volcano National Monument, on the theory that visitors kept arriving expecting a lake.
The last chapter is fire. In April 2022 the Tunnel Fire ran across the whole monument on a wind, burning the ponderosa around the cinder fields and sparing the visitor center; the campground survived, the forest around it did not entirely, and the storms that followed on the bare slopes tore out the culverts under Forest Road 545. That is the work that closed the road from September 21 to October 21, 2026, and sent Bonito’s season to an early end on September 20. The volcano itself is unchanged since 1085, which is the point of coming.
Why it matters
Sunset Crater is the one place in Arizona where you can stand on ground younger than the people who farmed it, and Bonito is the only bed at its gate. The monument exists because a town refused to let a studio dynamite its volcano, and its rules exist because the volcano could not survive its own visitors; both are worth knowing before you walk the lava. For a Scottsdale visitor it is a two-night trip, not a day trip: the flow at dawn, Wupatki in the afternoon, the darkest sky within three hours at night, and a second day for Walnut Canyon or the Peaks. Reserve the north side of the loop, carry water onto the cinders, leave the cone alone, and plan for May.