May 10–11, 1996 (Everest summit and rescue)

The May 10–11, 1996 Everest summit and rescue was a chain of summit-day decisions and overnight search efforts in which scant oxygen, unfinished route preparation, and unreliable communications narrowed the options available to climbers and rescuers. The chronology is also a record of what people at different camps knew—or could not confirm—as the weather deteriorated and overdue climbers failed to return to the South Col.

Preparation and constraints

Mountain Madness’s summit plan depended on an acclimatization schedule and a division of labor. Its first excursion was to 6,100 meters, the site of Camp I; the clients were to carry only personal gear while Sherpas under Lopsang Jangbu Sherpa carried ropes and supplies. At the same time, a cooperative effort among several expeditions to fix ropes between Camps III and IV created a staffing conflict. Mountain Madness sent Anatoli Boukreev in place of Sherpas who were needed to establish Camp III and then rest. The route work mattered to the summit bid, but the arrangement left the expedition’s own preparations and workforce under pressure.

The summit route above Camp IV was not ready as the climbers had been led to expect. Clients from the Mountain Madness and Adventure Consultants teams understood that Ang Dorje Sherpa and Lopsang would leave ahead of them to fix ropes, so the clients would not have to wait. Neither sirdar nor other Sherpas had gone ahead. Lopsang later said that a member of the 1996 Montenegro expedition had told him ropes were already fixed; Jon Krakauer questioned that account, noting that Lopsang and Ang Dorje carried rope. The record leaves the explanation contested, but establishes the operational consequence: climbers reached the Balcony expecting fixed lines and instead faced delays and work still to be done.

Oxygen supplies left little room for a second attempt or a prolonged emergency. At Camp IV, Mountain Madness had sixty-two canisters: nine heavier Zvesda bottles reserved for sleeping and fifty-three Poisk bottles set aside for the May 10 climb. Five of the six climbing Sherpas planned to use oxygen; together, the Sherpas carried twenty-one bottles, including emergency oxygen carried by Lopsang. Clients and guides carried seventeen bottles, while Boukreev carried one. Once thirty-eight Poisk bottles had gone up the mountain, only fifteen full Poisk bottles and whatever remained of the Zvesdas were left at camp. The planned climb was therefore a single attempt, not a reserve-backed operation that could easily absorb a delay.

The communications system was similarly constrained. The radios Scott Fischer had brought were old, ten-channel models; Martin Adams considered them a major equipment misstep. On the mountain, radio access was limited, and messages moved through a chain of Sherpa relays between Base Camp, Camp II, and Camp IV. Ingrid Hunt reported that information was inconsistent and sometimes incomplete. The system could transmit a report, but its multiple intermediaries made it difficult to establish what was happening on the route or to get medical advice to a climber in time.

The summit push

The team began moving in the night of May 9–10: Sandy Hill Pittman recalled waking at 10 p.m., while Neal Beidleman remembered the Sherpas starting to move at exactly that hour. The clients and guides checked crampons and equipment in the moonlight, and Fischer distributed oxygen. At the Balcony, climbers paused to change from their first oxygen canister to their second and drink. This was already the Death Zone, where cold and oxygen deprivation made even a short delay consequential.

Fischer had not established a definite summit-day turnaround time for his clients. Instead, he and his guides had planned to alternate the lead: Lopsang, Boukreev, and Beidleman would take turns at the front, while Fischer brought up the rear and turned back stragglers as he reached them. If problems arose, Fischer expected to contact Lopsang by radio. Neither Boukreev nor Beidleman had been issued a radio. The arrangement depended on Fischer’s ability to observe the group and on contact with Lopsang, but neither condition guaranteed that an overdue climber could be identified or reached promptly.

By the afternoon, delayed progress had left people separated along the ridge. Lopsang summited at about 2:30 p.m. and waited near the top for Fischer, who arrived at approximately 3:40. After roughly fifteen minutes they began descending. Lopsang stopped to retrieve an ice ax he had anchored in the snow to fix rope for ascending climbers. He then waited in subzero temperatures while Rob Hall helped his exhausted client Doug Hansen reach the summit and descend. Lopsang did not catch up with Fischer until about 5:45 p.m., when Fischer was already in serious trouble.

Reports from the mountain did not give Base Camp a consistent picture of the team’s location or condition. At 6 a.m., Hunt received a report that climbers were doing well and approaching the South Summit, although they did not actually reach it until hours later. At 8 a.m., another report said they had all reached the South Summit. Later, while Rob Hall’s camp reported that Hall and nearly all his clients had summited, Ngima Sherpa told Hunt that all the Mountain Madness members had also summited. Around 3 p.m., Hunt spoke briefly with Fischer; he said his members had summited and that he was exhausted. She urged him to descend.

The emergency and the broken relay

At 4:30 p.m., members of Hall’s camp told Hunt they needed oxygen sent back up: a climber had collapsed above the Hillary Step, and Hall was with him. Hunt and the Sherpas tried to contact people higher on the route and asked Pemba Sherpa whether he could take oxygen up. Pemba said the weather was too bad and he did not want to go. At 5:45 p.m., a report reached Hunt that Fischer and Lopsang were just below the South Summit, out of oxygen, and that Fischer was very weak. From then until 10:45 p.m., Hunt knew Fischer was in danger but could not establish reliable contact with him or the people around him.

The relay’s limitations became stark in the overnight reports. At 10:46 p.m., Ngima said that Pemba had reported Fischer, Lopsang, Makalu Gau, three Taiwanese Sherpas, and one New Zealand Sherpa near the South Col. Pemba said they were flashing headlamps and making noise with oxygen bottles to attract the group. Yet Hunt had learned from Hall’s camp that a complete whiteout prevailed above. She questioned how the reported signaling could be working and whether the account was meant to give her hope. At 1 a.m. on May 11, another report said Lopsang had still not reached Camp IV and was coughing and in bad condition. Hunt hurried to try to get medical advice to the team, but the connection had disappeared; no word came for six hours.

The uncertainty was not merely a matter of distance. Messages passed from Hunt through Ngima to Gyalzen Sherpa at Camp II, then to Pemba at Camp IV, and onward to Lopsang or someone on the mountain; reports came back through the same chain. Hunt said she did not trust that English messages would survive each translation and relay accurately. She repeatedly asked Ngima for news when she heard Nepali conversations, but sometimes he reported that nothing had happened even after speaking with Pemba. The crisis exposed the gap between having radios and having dependable communication: reports were delayed, filtered, or contradictory precisely when oxygen, weather, and location demanded clarity.

Boukreev’s night search

Boukreev’s account describes a separate search effort driven not by a radio alert but by the absence of returning climbers. Between 6 and 10 p.m., he tried to climb toward the missing group despite near-zero visibility, recognizing the danger of falling into a crevasse or straying toward the Kangshung Face. He returned to camp for oxygen. When Martin Adams arrived around 10 or 10:30 p.m. without having seen anyone, Boukreev went back out, hoping to find a headlamp. He had crampons and boots ready, with three oxygen bottles in the tent.

Around 1 a.m., Beidleman and Klev Schoening returned with Lene Gammelgaard and others, and told Boukreev that Sandy Hill Pittman, Charlotte Fox, and Tim Madsen had stayed behind and needed help. Boukreev’s first search came close: he later estimated that he passed within about thirty meters of them without seeing them. He turned back when the weather worsened, then went out again. At some point between 2 and 3 a.m., he asked for directions and was told to go across the flat ground toward the China side. He had not slept or rested after his summit attempt, but understood that the stranded climbers had been without oxygen for many hours and might be unable to move without it.

The search depended on people and equipment already depleted by the climb. Boukreev found Sherpas sleeping in their tent, exhausted after their summit effort. Pemba gave him tea; Boukreev spoke with Lopsang about the need to help the stranded group and the danger of their oxygen running out. The description does not turn the rescue into a simple story of individual resolve: the same exhaustion that made carrying or searching difficult affected the Sherpas as well as the guides, while the storm made navigation uncertain even for someone who knew the camp and route.

Record and significance

The episode’s timeline is assembled from recollections and retrospective testimony, not from a single, reliable stream of live reports. A photograph caption identifies Hansen approaching the summit and marks the rock alcove below the South Summit where the Mountain Madness and Adventure Consultants oxygen cache had been placed. Another locates the site where Adams encountered Jon Krakauer and where Boukreev later found Pittman, Namba, Fox, and Madsen near Camp IV. These mapped places make clear how a few fixed points—the oxygen cache, the Hillary Step, the South Col tents—structured a night in which people often could not see or locate one another.

The narrative also preserves disagreement about responsibility and judgment. The absent fixed ropes, Fischer’s lack of a firm turnaround deadline, the small oxygen margin, and the relay failures are not interchangeable problems, but they compounded one another. Lopsang’s wait for Hall and Hansen delayed his return to Fischer; reports that climbers had already reached the South Summit or summited obscured the actual pace of the ascent; and the radio chain could not consistently convey worsening conditions. The dates thus mark not only a summit and a rescue, but the transformation of a tightly scheduled commercial climb into a night of fragmented information, dwindling oxygen, and improvised searches.