The most dangerous 8,000m peak in the Himalaya, and the fatality rate behind it

K2 has the fearsome name. Everest has the crowds and the headlines. But by the one measure that matters to a climber — how many people die for every one who reaches the top — the deadliest mountain in the Himalaya is Annapurna I, the Nepali giant that was also the first 8,000er ever climbed.

The number, and how it has moved

Guinness World Records lists Annapurna I at 75 deaths against 559 successful ascents, about 13.4 deaths for every 100 summits, as of 7 February 2025. That is still the highest ratio of any Himalayan mountain Guinness compares, a whisker ahead of Dhaulagiri at 13.01%.

For most of the mountain’s history the ratio was far grimmer, which is where the “one in three dies” line still repeated online comes from. The percentage has fallen as more climbers have succeeded, not because the mountain got any safer: the slope that kills people is exactly where it always was.

Why Annapurna I kills

Because the danger is overhead and indifferent to skill. The standard route up the north face runs directly beneath enormous hanging seracs and slopes primed to avalanche, and there is no way to the summit that avoids sustained objective hazard. Guinness records that most deaths happen at a single avalanche point at about 5,900 m, between Camp II (5,460 m) and Camp III (6,400 m). The worst single day came on 19 September 1991, when six climbers died in one avalanche.

The weather is fickle, the descent is as exposed as the climb, and rescue high on the peak is close to impossible. Where a strong climber can in a sense out-decide the danger on some mountains, on Annapurna it falls on its own schedule.

How it compares with Dhaulagiri, Everest and the rest

Annapurna leads on ratio, not on the number of people who die there. It is deadly because so few succeed relative to how many the mountain takes.

One honest caveat: Guinness’s comparison covers the Himalaya and leaves out Pakistan’s K2 and Nanga Parbat, whose published rates vary widely depending on who is counting and from when. And every figure here is all-time, so a peak with few ascents swings more — which is exactly why Annapurna’s small number of summits keeps its ratio high. We unpack how these numbers are counted in which 8,000er actually kills the most climbers.

The mountain that started it all

Annapurna I was the first 8,000-metre peak ever climbed. On 3 June 1950 Maurice Herzog and Louis Lachenal of France reached its summit, the first time any human had stood on top of an eight-thousander.

Both paid for it on the descent: Herzog lost fingers and toes to frostbite, Lachenal his toes. More than seventy-five years on, the mountain that opened the era of high-altitude climbing is still the one most likely to keep a climber.

This is a climber’s statistic, not a trekker’s

None of the figures above describe trekking, and the difference is not a matter of degree. They are for mountaineers on the summit route above 7,000 m, not for the tens of thousands who walk into the Annapurna Sanctuary each year to look up at the peak from its base.

Cover photo: Timothy A. Gonsalves via Wikimedia Commons (CC BY-SA 4.0). Section photos: kumar dulal via Pexels (Pexels licence); Abdul Kayum via Pexels (Pexels licence).