National parks are typically seen as serene sanctuaries, places where people retreat to experience the majesty of nature and escape the troubles of everyday life. Yet these vast, often remote wilderness areas have also been the settings for some of America’s most disturbing and notorious crimes. The isolation that makes these parks so appealing to nature lovers can also attract those with sinister intentions, creating perfect conditions for criminal activity far from the watchful eyes of law enforcement. From cold-blooded murders to mysterious disappearances, national parks have witnessed a dark underbelly of human behavior that contrasts starkly with their natural beauty. This exploration of infamous national park crimes reveals not only the vulnerability of visitors in these wild spaces but also highlights the extraordinary challenges faced by the specialized law enforcement officers tasked with solving these complex cases.
The Trailside Killer of Yosemite

One of the most chilling series of crimes ever to occur in a national park was perpetrated by David Carpenter, infamously known as the “Trailside Killer.” Between 1979 and 1981, Carpenter stalked and murdered at least seven hikers, primarily women, on remote trails in and around the Mount Tamalpais State Park and Point Reyes National Seashore in California. What made these crimes particularly terrifying was Carpenter’s method of operation – he would often target couples, tie them up, sexually assault the women, and then murder both victims. The beautiful, isolated trails that attracted nature enthusiasts became hunting grounds for a predator who exploited the vulnerability of hikers in remote areas. After an intensive investigation involving multiple law enforcement agencies, Carpenter was eventually captured, convicted, and sentenced to death, though he remains on death row to this day.
The Yosemite Murders of 1999

In 1999, Yosemite National Park became the site of a horrific series of murders that shocked the nation and changed park security forever. Cary Stayner, a handyman at a motel just outside the park, murdered four women in a three-stage killing spree that lasted from February to July. His first victims were Carole Sund, her daughter Juli, and their friend Silvina Pelosso, who were staying at the Cedar Lodge where Stayner worked. Months later, he killed Yosemite Institute naturalist Joie Armstrong. What made these crimes particularly disturbing was that they occurred in what visitors perceived as a safe environment, shattering the illusion of national parks as sanctuaries from violence. The case garnered massive media attention and resulted in one of the largest manhunts in park history before Stayner was finally apprehended. He was ultimately sentenced to death and remains on death row in California.
Disappearance in Joshua Tree: The Meyerdirk Case

The mysterious disappearance of Paul and Laura Meyerdirk in Joshua Tree National Park in 2003 remains one of the most perplexing cases in national park history. The couple ventured into the park for a day hike but never returned to their vehicle, triggering a massive search operation that yielded few clues. Six months later, their skeletal remains were discovered in a remote area of the park, with evidence suggesting they had been murdered rather than succumbing to natural causes. What made this case particularly chilling was the complete absence of witnesses or obvious motives, creating a perfect “murder in isolation” scenario that has frustrated investigators for years. Despite multiple leads and periodic review of the evidence, the Meyerdirk murders remain unsolved to this day, serving as a grim reminder of the vulnerability of visitors in vast, remote wilderness areas and the significant challenges faced by law enforcement in such environments.
The “Railway Killer” in Carlsbad Caverns

Angel Maturino Reséndiz, known as the “Railway Killer,” brought his reign of terror to Carlsbad Caverns National Park in 1991 when he murdered a park employee in her housing unit near the park. Reséndiz was a transient serial killer who used the railway system to travel across the United States, hopping off to commit murders before boarding another train to evade capture. The isolated nature of Carlsbad Caverns and its proximity to railway lines made it an opportune location for his predatory behavior. What made this case particularly notable was how it highlighted the vulnerability of park staff who live in remote locations, often with minimal security. The murder sent shockwaves through the National Park Service community and led to improved security measures for employee housing throughout the system. Reséndiz was eventually captured and linked to at least 15 murders across multiple states before being executed in Texas in 2006.
The Grand Canyon Double Homicide

In 2006, the majestic Grand Canyon became the site of a shocking double murder when two Japanese tourists were found shot to death at a scenic overlook on the South Rim. Tomomi Hanamure and her companion had been enjoying the breathtaking views when they were approached and killed in what appeared to be a robbery gone wrong. The investigation was complicated by the remote location, limited evidence, and the fact that the victims were international tourists with no known enemies in the United States. After months of investigation, authorities arrested a local man with a history of substance abuse and violent behavior who was eventually convicted based on ballistic evidence and witness testimonies. This case highlighted the unique challenges faced by law enforcement in tourist-heavy national parks, where visitors may be unfamiliar with their surroundings and particularly vulnerable to opportunistic crimes. It also led to increased ranger patrols at popular overlooks and viewing areas throughout the Grand Canyon.
Missing and Murdered in Glacier National Park

Glacier National Park became the setting for one of the most disturbing unsolved cases in national park history when in 1976, Julie Williams and Lollie Winans were found brutally murdered at their backcountry campsite near Glacier’s remote Lake Kintla. The two experienced hikers had their throats slashed inside their tent, with no signs of sexual assault or robbery, leaving investigators puzzled about the motive. For decades, the case remained cold until 2002, when authorities announced they had indicted a former Glacier park employee named Robert Mountford Jr., but the charges were later dropped due to insufficient evidence. The murders have haunted park rangers and visitors for over four decades, representing the vulnerability even experienced outdoorspeople face in remote wilderness. The case also highlights a disturbing pattern of violence against women in national parks, prompting ongoing discussions about safety measures for female hikers and campers in isolated areas.
The Shenandoah National Park Killings

In May 1996, Shenandoah National Park became the scene of a horrific double homicide when hikers Julianne Williams and Laura “Lollie” Winans were found murdered at their campsite along the Appalachian Trail. Both women had been bound and their throats had been cut, sending shockwaves through the hiking community and the entire region. The remote location of the crime scene presented significant challenges for investigators, who had to carefully preserve evidence while navigating difficult terrain. For years, the case remained unsolved until 2002, when authorities arrested Darrell David Rice on the basis of circumstantial evidence and statements he had made while incarcerated for an unrelated crime. However, in a shocking development, all charges against Rice were eventually dropped when DNA evidence failed to connect him to the crime scene. To this day, the murders remain officially unsolved, serving as a sobering reminder of the potential dangers lurking in even the most beautiful wilderness areas.
The Olympic National Park Massacres

In one of the most disturbing crimes ever committed in a national park, Olympic National Park in Washington became the site of a family massacre in 1978 that remains etched in the region’s collective memory. The Bassett family—including parents and three young children—were camping in a remote area of the park when they were attacked in the middle of the night by an unknown assailant who methodically killed each family member with a high-caliber hunting rifle. The isolation of their campsite meant the bodies weren’t discovered for three days, significantly complicating the investigation and evidence collection. Despite one of the most extensive manhunts in Pacific Northwest history, including hundreds of interviews and forensic analysis, the perpetrator was never identified or caught. The case fundamentally changed how many visitors approached backcountry camping in Olympic National Park, with many choosing to avoid the area where the murders occurred even decades later.
Disappearance at Death Valley

The 2009 disappearance of German tourists Egbert Rimkus, his 10-year-old son Georg Weber, and their friends Cornelia Meyer and her 4-year-old son Max Meyer in Death Valley National Park represents one of the most haunting mysteries in national park history. The four tourists vanished during the scorching summer heat, leaving behind minimal clues as to their fate. Their rented van was found months later, stuck in sand in a remote area of the park known as Anvil Canyon, far off established roads. What made this case particularly tragic was the discovery of a torn note in the van stating “We’re going through the pass,” suggesting they attempted to hike out of their predicament in deadly summer temperatures exceeding 120 degrees Fahrenheit. Despite numerous search efforts, only partial human remains were ever recovered, confirmed in 2009 to be those of adult Germans. The remoteness of Death Valley, combined with its extreme climate, created the perfect conditions for this tragic mystery that continues to serve as a stark warning about the dangers of venturing unprepared into one of America’s most unforgiving landscapes.
The Rocky Mountain National Park Cold Case

One of the longest-unsolved murders in national park history occurred in Rocky Mountain National Park in 1970, when park ranger Thomas Rowe was found shot to death near a remote backcountry trail. Rowe had been on routine patrol when he apparently encountered someone who shot him multiple times with his own service weapon. The isolated location of the crime scene, combined with a severe snowstorm that hit shortly after the murder, significantly hampered evidence collection and the initial investigation. For over five decades, the case has remained open, with periodic reviews by cold case detectives who have applied modern forensic techniques to preserved evidence. The murder fundamentally changed ranger protocols within the National Park Service, leading to improved communication requirements, partner patrols in remote areas, and enhanced training for potentially dangerous encounters. Rowe’s murder serves as a somber reminder of the risks faced by law enforcement rangers who often work alone in vast wilderness areas far from backup.
The Petrified Forest Jewel Heist

While most notorious national park crimes involve violence against people, the 1987 Petrified Forest jewel heist stands as one of the most significant property crimes ever committed on protected federal lands. In a carefully orchestrated overnight operation, thieves broke into the Rainbow Forest Museum at Petrified Forest National Park, bypassing security systems to steal over $500,000 worth of rare petrified wood specimens, including several pieces containing precious opal and other gemstone inclusions. What made this crime particularly devastating was that many of the stolen specimens were one-of-a-kind scientific artifacts with irreplaceable research value, some dating back over 225 million years. The sophistication of the operation suggested inside knowledge of the museum’s security protocols and the specific value of the targeted specimens. Despite an intensive FBI investigation that spanned multiple states, only a small portion of the stolen items were ever recovered, with most disappearing into private collections on the black market. The heist led to dramatically enhanced security measures at natural history collections throughout the National Park System.
The Everglades Drug Murders

The vast, labyrinthine waterways of Everglades National Park became the perfect setting for a series of drug-related murders in the late 1980s, when the park’s remote backwaters were exploited by drug trafficking operations. In a particularly notorious case from 1988, three bodies were discovered in shallow graves near an abandoned airstrip within park boundaries, all bearing the hallmarks of cartel-style executions. The victims had been involved in a cocaine smuggling operation that used the park’s isolated landing strips and countless water routes to transport narcotics from the Caribbean into the United States. What made these crimes especially challenging to solve was the transient nature of both victims and perpetrators, along with the enormous geographic scope that investigators had to cover in a landscape that quickly obscures evidence. The Everglades murders highlighted how national parks could become unintended sanctuaries for organized crime due to their limited law enforcement presence and abundant entry and exit points. These cases eventually led to increased cooperation between National Park Service rangers, DEA agents, and U.S. Customs officials to monitor suspicious activities within park boundaries.
Modern Challenges in Park Law Enforcement

Today’s national park law enforcement rangers face evolving challenges in addressing and preventing serious crimes within America’s protected lands. The vast geographic scope of many parks, combined with limited staffing, means that rangers often patrol enormous areas alone, sometimes days away from backup if an emergency occurs. Additionally, the increasing popularity of national parks has led to record visitation numbers without corresponding increases in law enforcement personnel, creating significant security gaps in many locations. Modern rangers must also contend with sophisticated criminal enterprises that specifically target parks for illegal activities ranging from drug production to wildlife trafficking, taking advantage of the limited surveillance capabilities in remote areas. Perhaps most challenging is the complex jurisdictional landscape that often requires coordination between park rangers, local sheriff departments, state police, tribal authorities, and federal agencies like the FBI when serious crimes occur within or across park boundaries. Despite these obstacles, specialized investigative units like the National Park Service Investigative Services Branch have developed remarkable expertise in solving wilderness crimes through a combination of traditional detective work, modern forensic techniques, and deep understanding of the unique environments where these crimes occur.
Conclusion

National parks represent the crown jewels of America’s natural heritage, places where millions go to connect with wilderness and escape the pressures of modern life. Yet the very features that make these spaces so appealing—their remoteness, vastness, and relative lack of surveillance—have also made them occasional settings for humanity’s darkest actions. The crimes chronicled here serve as sobering reminders that even in spaces dedicated to preservation and enjoyment, human malevolence can intrude. They also highlight the extraordinary work of park rangers and special agents who investigate these challenging cases, often with limited resources and in difficult terrain. While these infamous crimes represent statistical anomalies among the hundreds of millions of safe visits to national parks each year, they underscore the importance of remaining vigilant, prepared, and aware even in natural settings that feel removed from the dangers of everyday life. As visitation to national parks continues to grow, the delicate balance between maintaining the open, accessible character of these public lands and ensuring the safety of everyone who visits them remains an ongoing challenge for the National Park Service.