What are the dangers of crevasses on Mount Everest?

What are the dangers of crevasses on Mount Everest?

The Dangers of Crevasses on Mount Everest

Mount Everest, known in Nepal as Sagarmatha and in Tibet as Chomolungma, is the highest peak on Earth. Standing tall at 29,029 ft above sea level, Everest has long been an attraction for daring and adventurous climbers from all over the world. But aside from issues like altitude sickness, hypothermia, and exhaustion, there are hidden dangers lurking beneath the snow – crevasses. In this article, we will delve into the dangers of crevasses on Mount Everest.

What Are Crevasses?

Crevasses are deep, open fractures in a glacier or an ice sheet. They form as a result of the movement and deformation of the ice. Some can be as deep as 45 meters or even more – about the height of a 15-story building – and can range anywhere from a few centimeters to several meters wide.

The Hazards of Crevasses on Mount Everest

The most apparent hazard of crevasses is falling into one. This can be a fatal event, as rescuing someone from deep within a crevasse can be extremely challenging, especially on a chaotic and challenging terrain such as Everest.

However, the danger of crevasses isn’t merely their presence, but also their absence, or rather, how they can appear to be absent. Crevasses are often hidden by a layer of snow, forming what is known as a snow bridge. These bridges can sometimes support the weight of a climber, but not always.

Hidden Dangers Beneath a Layer of Snow

Even well-versed climbers can be fooled by these deceptive formations. A seemingly solid expanse of snow may conceal a fatal drop, inducing a false sense of safety. Moreover, the unpredictability of these snow bridges raises the risk factor—they might support a climber’s weight one moment and collapse the next.

Challenges in Rescue Operations

Beyond the immediate peril of falling into a crevasse, the other significant hazard lies in the difficulty of rescue. The instability of the surrounding ice and the snow formations, the extreme weather conditions, coupled with the already harsh environment of Everest, make rescue operations formidable. The altitude and the thin air add further challenges.

Physical and Mental Strain

The existence of crevasses also forces climbers to take longer and more complex routes to avoid these hidden chasms. This adds extra physical strain and mounts more pressure on the already exhausted climbers.

Importance of Safety Measures

Despite the inherent danger, mountaineers who are experienced, observant, and cautious can often safely navigate crevasse-laden regions. Using proper safety measures like ropes, harnesses, and safety lines can help prevent falls into crevasses. Learning to recognize the signs of potential snow bridges and having a good understanding of glacier travel can also significantly reduce the risk.


1. How deep can crevasses on Mount Everest be?

Crevasses on Mount Everest can be incredibly deep, often reaching depths of over 45 meters – which is comparable to a 15-story building.

2. What causes crevasses on Mount Everest?

Crevasses are caused by the movement and deformation of the glacier ice on Mount Everest. When the ice moves, it fractures and breaks apart, creating these massive, dangerous gaps.

3. How dangerous are crevasses to climbers on Mount Everest?

Crevasses pose a significant risk to climbers. Besides the apparent danger of falling into one, crevasses increase the difficulty and length of climbing routes, add physical and mental strain, and are challenging to spot due to being often concealed by snow bridges.

4. What are some safety measures to avoid crevasse accidents on Mount Everest?

Proper safety measures like ropes, harnesses, and safety lines, as well as an understanding of glacier travel and the ability to recognize signs of potential snow bridges, could reduce the risk significantly.

5. How difficult is it to perform a rescue operation in the crevasses of Mount Everest?

Rescue operations in crevasses are challenging due to the instability of the surrounding ice, extreme weather conditions, the high altitude, and the thin air.