Accidents in North American Mountaineering (ANAM) is the American Alpine Club's annual catalogue of reported climbing incidents, published continuously since 1948. Amateur mountaineers should read it not for the drama but for the pattern: the same shapes recur year after year, and recognising those shapes in time is a skill that improves with practice.
What ANAM actually is
Accidents in North American Mountaineering is an annual publication of the American Alpine Club, published continuously since 1948 and co-published with the Alpine Club of Canada since 2009. Each volume catalogues reported mountaineering incidents from the prior season with a brief factual narrative and a short summary analysis. By 2026 the publication is in its 79th volume, which makes it the longest-running structured record of climbing accidents the sport has anywhere in the world.
The format is deliberately undramatic. Each entry names the range, the route, the date, the party composition where known, what was attempted, and what happened. The analysis is short and focused on the decision sequence, not on blame. Some incidents involve fatalities, some involve injuries, some involve close calls that produced neither. The thread connecting the volumes is not severity. It is pattern.
Why amateurs should read it
Climbing has a strong oral tradition and a thin written one. Most of what an experienced mountaineer knows about how things actually go wrong comes from people they have climbed with, the partners those people lost, and the slow accumulation of stories around hut tables and trailheads. Amateurs without that network are missing the input.
ANAM is the closest substitute the sport has. It is not a replacement for time with a certified guide and it is not a replacement for mentorship from experienced partners. It is the only structured, repeatable, decade-spanning corpus of "this is the shape failures actually take", and it is freely available to anyone willing to read it. For the amateur mountaineer building a mental library of warning shapes, there is no other source like it.
Reading ANAM is how you build the recognition that lets you notice when conditions, fatigue, or time pressure are pushing the day toward a shape the published record has seen before.
The recurring patterns
A reader who works through several volumes notices the same shapes returning. The bulk of the record is not exotic. Late-day descents appear over and over, because descent is when route-reading is least careful, ropework is most rushed, and cognitive reserve is at its lowest. The pillar guide on mountain decision-making walks through why the brain is in its worst state precisely at the hour the route asks for its best work.
End-of-trip and end-of-season patterns recur with the same regularity. Climbers push harder on the last objective, the last day, the last lap, because the discipline has loosened and the cost of standing down feels higher than it actually is. Inadequate or failed protection, anchor choices, and belay errors that the same climber would not have made at home appear constantly. Avalanche, rockfall, and serac decisions on routes the party chose to attempt at the wrong time of day are another recurring band. And the broadest category, experience-objective mismatch, where the climber's actual mileage on the actual terrain was thinner than the route required, sits behind a large share of the incidents involving less seasoned parties.
None of these patterns are surprising in isolation. The value of the record is seeing them stacked on top of each other, year after year, in the same proportions.
Where The Sharp End fits
The American Alpine Club also produces The Sharp End, a podcast that runs narrative deep-dives on incidents drawn from ANAM. The host interviews the climbers involved where possible, reconstructs the decision sequence as it unfolded, and surfaces the human factors that the written summary, by its nature, cannot.
The two formats complement each other. ANAM gives you the structured corpus from which the meta-patterns emerge. The Sharp End gives you the voice in the climber's head on the morning of the day, which is the part you actually need to recognise in yourself. For athletes who absorb stories better than they absorb summaries, the podcast is the more memorable on-ramp. For building the breadth of pattern recognition, the written record is irreplaceable.
What the patterns mean for training
The patterns in the published record are not random. They cluster around the moments when the climber's cognitive reserve is lowest: late in the day, late in the trip, after a long approach, at altitude, in cold, in heat, or after a poor night's sleep. The pillar guide unpacks the science in detail. The training implication is short.
Cardiovascular reserve is what keeps the cognitive cost of altitude, cold, and heat from being piled on top of crushing physical fatigue. A climber who arrives at hour 12 with capacity to spare makes different decisions than a climber who arrives at hour 12 already at their limit. The published record is the case for treating decision-making as a training topic in the first place. The training itself, the polarised aerobic base, the vertical capacity, the eccentric descent strength, the altitude tolerance, the sleep, is the leverage point. Altitude, cold, and heat all degrade the brain on their own. Reserve is what keeps the degradation from arriving with crushing fatigue stacked on top of it.
Train the reserve the pattern asks for
The recurring shapes in ANAM cluster around the hours when the climber has nothing left. Train to Mountain builds a personalised plan around your peak that prioritises aerobic durability, vertical capacity, and descent strength, so the cognitive cost of altitude and cold is not landing on top of physical collapse. See the decision-making pillar for the full argument, the mountaineering training pillar for the method, or test where you sit today with the Summit Readiness Calculator. For the structured program, see training for mountaineering. Volumes of ANAM itself are available through americanalpineclub.org.
Common questions
What is Accidents in North American Mountaineering (ANAM)?
Accidents in North American Mountaineering is an annual publication of the American Alpine Club, published continuously since 1948 and co-published with the Alpine Club of Canada since 2009. Each volume catalogues reported mountaineering incidents from the prior season with brief narrative and summary analysis. It is the longest-running structured record of climbing accidents in North America.
How do I read ANAM?
Read it the way you would read a flight-safety bulletin, not a thriller. Scan the contents for incidents that share terrain, elevation band, or season with the objectives you train for. Read the narrative once, then re-read with the analysis in mind. Look for the moment the decision was made, not the moment the consequence arrived. After a few volumes the meta-patterns surface on their own.
Where do I get ANAM?
ANAM is published by the American Alpine Club and is available through americanalpineclub.org. AAC members receive a print copy with their membership. Older volumes circulate widely in climbing club libraries, university outdoor program libraries, and second-hand. The AAC also archives back issues digitally for members.
Is reading ANAM depressing?
It can be, briefly, when an incident matches terrain or a party profile you recognise. The longer-term effect is the opposite. ANAM is a structured reminder that experienced climbers fail in patterned, recognisable ways, and that recognising the pattern in time is a skill that improves with practice. Climbers who read it consistently report more confident, less anxious decision-making in the field, not less.
Why should an amateur mountaineer read it instead of just trusting their guide?
Because the patterns in ANAM are the patterns that working guides have already internalised. Reading the record builds the recognition that lets you notice when conditions, fatigue, or time pressure are pushing the party toward a familiar shape, and to raise it with your guide before the call gets made. A certified guide remains the authoritative voice on the day. ANAM helps you become a more useful second pair of eyes.
Does ANAM only cover North America?
Primarily, yes. ANAM is structured around incidents reported in North American ranges and is co-published by the AAC and the Alpine Club of Canada. The cognitive and decision-making patterns it documents, however, are not regional. Late-day descents, end-of-trip lapses, anchor and protection decisions, and experience-objective mismatches show up in the German Alpine Club's accident statistics, in the British Mountaineering Council's incident reviews, and in any alpine guiding service's internal record.
What is The Sharp End podcast?
The Sharp End is the American Alpine Club's complementary podcast, which runs narrative deep-dives on incidents drawn from ANAM. Hosts interview the climbers involved where possible, reconstruct the decision sequence, and surface the human factors the written summary cannot. For climbers who absorb stories better than they absorb summaries, it is a strong companion to the publication.
The takeaway
ANAM is not a thriller, not a memorial, and not a warning against the sport. It is the closest thing amateur mountaineering has to a structured, decade-spanning record of how decisions go wrong. The patterns recur. The recognisable shapes are recognisable because they keep happening. The amateur climber who reads a volume a year, listens to The Sharp End on the drive to the trailhead, and trains the reserve that keeps judgement intact at hour 12 is doing the boring, repeatable work that the published record argues for. That is the case for treating ANAM as canonical reading, and it is the case for treating training as part of the same conversation.