Saguaro National Park’s Box Fire contained, trails and campgrounds reopen

Smoke over the Rincon Mountains turned into a short but serious access problem at Saguaro National Park, then eased back to normal fast. The Box Fire, first reported June 13 at about 7:15 a.m. in the park’s east district just west of Juniper Basin Campground, started at roughly 40 acres and was 0% contained when crews arrived.

Saguaro National Park firefighters moved quickly with a direct attack at the fire’s edge while aircraft dropped water and retardant to slow the spread. To give crews room to work and keep visitors clear of the hazard, the park closed trails and backcountry areas tied to Javelina Picnic Area, the Loma Alta Trailhead, X9 Ranch access routes, and the Juniper Basin and Grass Shack backcountry campgrounds.

That disruption landed in one of the park’s most rugged corners. The Rincon Mountain District’s Javelina Picnic Area is the closest picnic area from the east district entrance, and the Tanque Verde Ridge Trail starts there. Juniper Basin sits about 6.9 miles away on foot and roughly 4,000 feet higher, a reminder of how remote the fire area was once it moved into the mountains above Tucson.

By June 16, the fire was 100% contained. Infrared flights showed very little heat remaining inside the burn area, and officials reported minimal fire behavior as the incident wound down. The blaze eventually burned 145 acres before full containment.

Investigators later determined the fire began with the crash of a paramotor, a motorized ultralight aircraft, in Box Canyon west of Juniper Basin Campground on the morning of June 13. Emergency responders located the pilot and transported the person to the local coroner’s office. The Southeast Zone Type 3 Incident Management Team was expected to hand command back to Saguaro National Park on Wednesday morning after containment, while the fire continued to be watched by infrared flights as resources were released to other incidents.

The episode also fit the park’s broader wildfire pattern. Saguaro National Park’s wildfire guidance says the lower Sonoran Desert below about 4,500 feet has historically seen little fire role, while the higher-elevation Rincon Mountains can carry fire more readily because grasses and forbs create continuous ground cover. Park conditions now show the east district fully reopened, with all roads, picnic areas and trails back in service after the brief shutdown.