A 34-year-old Czech mountaineer was killed Tuesday morning after being struck by rockfall high on the north face of Liskamm, one of the Alps’ most demanding 4,000-meter peaks, above Zermatt, Switzerland. According to the Valais Cantonal Police, the accident occurred at around 9:00 a.m. on July 7 while two climbers were ascending the north side of Liskamm at approximately 4,300 metres (14,108 feet). The pair were caught in a rockfall at that elevation. One of the climbers was struck and sustained fatal injuries.
His climbing partner immediately alerted emergency services. Rescuers from the Kantonale Walliser Rettungsorganisation were flown to the scene aboard an Air Zermatt helicopter but were only able to confirm the climber’s death on arrival. The victim has been identified as a 34-year-old Czech national. No further details have been released pending formal identification and notification of family members. The Valais public prosecutor has opened an investigation into the circumstances surrounding the accident.
Towering above Zermatt in the Pennine Alps, Liskamm reaches 4,527 metres (14,852 feet) and is one of the highest and most technically demanding peaks in the region. Nicknamed the “Man-Eater” for its steep flanks and heavily corniced summit ridge, it is widely considered one of the most serious classic 4,000-meter objectives in the Alps.
Tuesday’s accident occurred on the mountain’s north side — one of the most exposed and technically demanding aspects of the peak, rarely attempted by recreational alpinists and requiring a high level of alpine experience and skill. The standard approach to Liskamm from Zermatt follows the Monte Rosa Hut route before tackling either the east ridge or the more serious north faces. The accident site at 4,300 meters places the climbers high on the upper mountain, well into the most exposed terrain.
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The area around Zermatt forms one of Europe’s premier high-alpine mountaineering destinations, with dozens of peaks exceeding 4,000 meters connected by an extensive network of mountain huts, glaciers, and classic alpine routes. Every summer, thousands of climbers travel to the region to attempt iconic objectives including the Matterhorn, Dufourspitze, and Liskamm itself.
The accident comes as the Alps continue to experience an intense early-summer heatwave. Scientists have warned that exceptionally high temperatures and below-average winter snowfall are accelerating glacier melt across Switzerland, while warming mountain permafrost is increasing the likelihood of rockfall and slope instability in high alpine terrain.
Permafrost — the permanently frozen ground that acts as a natural cement within high mountain faces — helps bind fractured rock together. As it thaws, previously stable rock can loosen and collapse without warning, particularly during prolonged periods of extreme heat. Researchers have documented spikes in Alpine rockfall during major heatwave years including 2003, 2015, and 2022.
Mountain guides throughout the Alps have increasingly warned that warming temperatures are changing climbing conditions. Routes once considered relatively stable in midsummer are becoming more hazardous as glaciers retreat, snow cover disappears earlier, and thawing permafrost destabilizes high mountain faces.
The circumstances surrounding Tuesday’s rockfall remain under investigation.
