The National Park Service (NPS) has reported the conviction of three individuals for engaging in illegal BASE jumping within a national park. The agency has reiterated its commitment to uphold laws even amidst a federal shutdown, cautioning potential lawbreakers that regulations remain in force.

Yosemite Superintendent Raymond McPadden emphasized, “Illegal activities in Yosemite National Park are intolerable. Our law enforcement rangers remain dedicated and vigilant every hour of the day, throughout the year. These recent convictions highlight the professionalism and commitment of Yosemite’s protection team in enforcing federal laws and ensuring the well-being of both guests and emergency personnel.”

During the 1970s, Yosemite was a popular spot for BASE jumping, but the activity has been prohibited in national parks since the 1980s. BASE jumping, which stands for building, antenna, span, and earth, involves leaping from stationary structures using a parachute. This sport has been associated with numerous accidents and fatalities, posing significant risks to both participants and rescue teams.

Those caught in violation of the ban may face penalties of up to $5,000 or imprisonment under federal statutes. Additionally, offenders can have their gear confiscated and be barred from entering national parks. Despite these strict measures, enthusiasts often continue to engage in the activity clandestinely, typically at times when they are less likely to be caught.

Recently, social media has been abuzz with videos and images purportedly showing BASE jumpers launching from El Capitan, unauthorized campers in restricted zones, and climbers tackling Half Dome’s cables without the necessary permits, all in breach of park rules.

In recent weeks, several videos and images circulating on social media appear to show BASE jumpers leaping from El Capitan, unauthorized campers occupying closed areas and climbers scaling Half Dome’s cables without permits — all in violation of park regulations.

While the number of federal employees working at Yosemite during the government shutdown remains unclear, the NPS contingency plan states that essential staff will continue duties related to law enforcement and emergency response.

The Department of the Interior (DOI), which oversees the NPS, told Fox News Digital it is aware of reports of illegal activity and is investigating.

“We are aware of reports of BASE jumping in Yosemite and investigate all reports,” a department spokesperson said. “BASE jumping is illegal in all national parks, including Yosemite, due to the significant safety risks it poses to participants, the public and first responders.”

The department emphasized that, despite the shutdown, the National Park Service will continue to keep parks as accessible as possible during the lapse in appropriations.

A motorist passes through the Tioga Pass fee station at the eastern entrance to Yosemite National Park, which is vacant of available employees to collect fees that help fund the park on the first day of the government shutdown Oct. 1, 2025. (David McNew/Getty Images)

“Critical functions that protect life, property and public health will remain in place, including visitor access in many locations, law enforcement and emergency response,” the spokesperson said. “We have 100% of our law enforcement rangers on duty. They are highly trained and, as in any other year at this time, are handling both front country and backcountry patrols as needed.”

The DOI said Yosemite continues to see normal seasonal visitation levels and that law enforcement rangers are responding to incidents as they normally would. Since the start of the shutdown, there have been three reported and documented BASE jumping complaints, which remain under active investigation. 

The department also noted that the use of unmanned aircraft, or drones, is prohibited in Yosemite without a special permit. Violations can result in fines of up to $5,000 or six months in jail.

Officials said drone violations have increased in recent years, driven by the availability of consumer models. In response, Yosemite has expanded signage at entrances and visitor areas to remind the public of these restrictions. During the current shutdown, there have been sporadic reports of unauthorized drone use, and law enforcement rangers are responding as normal.

The DOI disputed some recent claims circulating online about deteriorating park conditions.

Yosemite National Park visitors take a look at the El Capitan rock formation and Bridalveil Fall from Tunnel View in Yosemite Valley in California.  (Craig Kohlruss/Fresno Bee/Tribune News Service via Getty Images)

“Our on-the-ground teams confirm that these reports do not accurately reflect current operations or visitor conditions,” the spokesperson said. “There has been no increase in vandalism, trash buildup or visitor misconduct unique to the shutdown period. Visitor cooperation and volunteer stewardship remain strong, and we appreciate the public’s continued care for these sites.”

The department added that it is “proud of the dedicated employees and partners who continue to serve the public during this challenging time” and said teams are “working hard to keep parks accessible, safe and welcoming.”

“Like many across the federal government, we look forward to a resolution that allows all staff to return to work supporting the park’s mission,” the statement added.

The latest convictions, announced on Friday, stem from three separate cases between 2020 and 2024, including one involving a serious injury.

• Christopher I. Durell admitted to jumping from the Porcelain Wall near North Dome in July 2024. He pleaded guilty and was sentenced to 18 months of unsupervised probation, fined $600 and ordered to complete 40 hours of community service. His BASE canopy and wingsuit were forfeited.
• Joshua A. Iosue was also identified as one of two individuals who jumped near North Dome that same month. He pleaded guilty and, earlier this month, was sentenced to two days in jail, 24 months of unsupervised probation and $2,510 in fines. He is barred from entering Yosemite during his probation.
• David A. Nunn jumped from El Capitan in July 2020 and had a serious equipment malfunction, colliding with the rock face before crash-landing at the base, according to the Park Service. He was rescued by park personnel and later sentenced to two days in jail, 12 months of unsupervised probation, fined $760 and ordered to pay $458.77 in restitution for the cost of his rescue. He is also banned from the park during his probation and had to surrender his parachute and harness.

This was Nunn’s second conviction for illegal BASE jumping; he previously pleaded guilty to a similar offense in 1998.

Yosemite is one of the nation’s busiest parks each year. (AP Photo)

Conservation advocates say the incidents reflect a larger pattern of disorder that can arise when national parks operate without full staffing.

During the 2018–2019 shutdown, Yosemite and other parks were vandalized and illegal off-roading and waste accumulation took months to repair, according to park advocates.

“This is exactly what we warned about. And this is why national parks need to be closed until the government reopens,” Emily Thompson, executive director of the Coalition to Protect America’s National Parks, said in a previous statement. “This shutdown is making an already bad situation at national parks and public lands far worse. The situation is dangerous and reckless for our parks, public lands and the visitors who love them.”

The coalition, made up of more than 40 former NPS leaders, has urged Interior Secretary Doug Burgum to close all 433 park sites during any lapse in federal funding, citing ongoing staffing shortages.

“Leaving national parks open without National Park staff to help protect visitors and resources is not only irresponsible — it’s dangerous. We don’t leave museums open without curators, or airports without air traffic controllers and we should not leave our National Parks open without NPS employees,” Thompson wrote. 

Yosemite typically welcomes about 4 million visitors each year, with roughly three-quarters arriving between May and October, according to the National Park Service. During the current funding lapse, the Interior Department’s contingency plan says parks will offer only basic services using retained recreation fees, while law enforcement and emergency operations continue.

Fox News Digital reached out to California Gov. Gavin Newsom’s office for comment about the convictions.

Stepheny Price covers crime, including missing persons, homicides and migrant crime. Send story tips to stepheny.price@fox.com.