Industry News
Two deadly quad bike accidents in as many days have rattled Europe’s mountain communities and sparked renewed discussion about the risks of using all-terrain vehicles in ski areas. In both cases experienced resort employees perished.
On Monday, February 23, Pierre Denambride, the 51-year-old head of slope safety at Flaine in Haute-Savoie, France, was killed while working on the mountain. One day later, on Tuesday night, a 41-year-old resort worker died in a separate quad accident in Flims, Switzerland, part of the Flims Laax ski area. The back-to-back tragedies have drawn attention to the use of quad bikes—often fitted with tracks or crawler systems—by ski patrol, slope safety teams, and mountain operations staff across Europe and North America.
According to resort officials from Grand Massif Domaines Skiables, Denambride had gone out late in the day to check a piste marker just before the slopes closed. While riding a tracked quad on a run, he fell into a hole and became trapped beneath the machine. He was alone when the accident happened and there were no eyewitnesses. Fellow slope workers discovered him during closing sweeps of the ski area. Rescue teams attempted resuscitation, but he was pronounced dead at the scene. Denambride had spent his career at Flaine and was widely known within the resort and mountain rescue community. A minute of silence was observed on the slopes Tuesday afternoon, and tributes poured in from across the Haute-Savoie region.
Flaine is part of the Grand Massif ski domain, one of France’s largest interconnected ski areas, linking several resorts with expansive terrain overlooking Mont Blanc. The resort employs extensive snow safety and slope management operations throughout the winter season. An investigation by France’s high mountain gendarmerie (PGHM) is underway to determine the precise circumstances of the accident.
Just 24 hours later, a second fatal quad accident involving a resort employee occurred in eastern Switzerland. According to the Graubünden cantonal police, two workers were traveling by quad along the Foppa toboggan run in Flims around 10:30 p.m. on Tuesday. Shortly after departing, the vehicle veered off the prepared track, overturned on an adjacent slope, and came to rest against a tree. The 41-year-old driver became trapped beneath the vehicle and died at the scene despite immediate first aid and resuscitation efforts by two Rega helicopter crews. His 52-year-old passenger sustained minor injuries and was airlifted to hospital in Ilanz. Authorities are investigating the exact cause of the crash in coordination with the public prosecutor’s office.
Flims is part of the Flims–Laax–Falera ski area in the canton of Graubünden, one of Switzerland’s largest winter sports regions, known for its extensive piste network and backcountry-access terrain.
Quad bikes—also known as all-terrain vehicles (ATVs)—are widely used in ski resorts for slope inspections, avalanche control access, transport of equipment, and medical response. Many are modified with rubber tracks for winter use, increasing flotation and grip on snow, but they can also be treacherous.
ATVs have a high center of gravity and are prone to rollover accidents, particularly on uneven terrain or side slopes. On snow and ice, traction can change abruptly. Holes hidden beneath snow, soft edges of groomed runs, or transitions between packed piste and natural terrain can destabilize even experienced operators. At night or during low-visibility conditions, the risks increase significantly. Unlike snowmobiles, which are purpose-built for snow travel and typically straddle a central ski and track system, quads are fundamentally wheeled vehicles adapted for winter.
In the United States, ATV-related fatalities are a persistent safety concern. According to the latest report from the U.S. Consumer Product Safety Commission (CPSC), from 2018 through 2020, there were 2,448 deaths in the United States associated with off-highway vehicles, which includes all-terrain vehicles, recreational off-highway vehicles and utility-terrain vehicles. ATVs accounted for more than two-thirds of the deaths. Rollovers account for a large proportion of the accidents.
Ski resorts worldwide continue to rely on quad bikes because they are versatile, relatively compact, and capable of accessing terrain where snowcats cannot operate. For slope crew, patrol teams, and maintenance crews, they are part of daily operations—especially during inspections, closing sweeps, and night work. The dual tragedies in Flaine and Flims are a sad reminder of the hard work ski resort crews put in long after lifts stop turning and skiers head home.
I’ve always called quad bikes “death machines”. They are a very unsafe vehicle. They just don’t tip over, they roll over, on top of you. They have no protective roll cage. Hopefully they will stop using these vehicles.