1. On April 18, 2014, an avalanche on Mount Everest killed 16 people, more than the death toll from the movie's prototype accident. Most of them were Sherpas preparing for the upcoming climbing season, which forced the filming to be delayed.
2. When Rob Hall's team was asked why they wanted to climb Mount Everest, everyone said in unison "because it's there," which is the motto of climbers all over the world. Its origin is George Mallory's answer when he was asked in a 1924 visit why he dared to risk his life to be the first person to summit Mount Everest. George Mallory disappeared during a mountaineering excursion in June 1924, and his body was found 245 meters from the summit in May 1999.
3. The pilot who drives the helicopter to rescue in the movie is Vijay Lama, the most experienced pilot in Nepal.
4. The name of Mount Everest was named in 1865 by British Surveyor Andrew Waugh. It was identified in the 1820s as the highest mountain in the world at 29,029 feet (8,848 meters).
5. Jon Krakauer, author of Into Thin Air, took issue with certain plot points of the film, notably a scene in which he refuses to help Anatoli Boukreev's team in their search and rescue. Krakauer told the Los Angeles Times, "The dialogue in the movie doesn't exist at all, when Anatoli went to a couple of tents when not even the Sherpas could get out, ... and no one came to my tent to ask questions." The director of the film, Baltasar Kormákur, also responded, saying that this plot is only to illustrate the helplessness of human beings, and why they cannot go out to rescue.
6. Christian Bale was said to be expected to star in Rob Hall, but was unable to do so due to his role in Exodus: Gods and Kings (2014). So director Baltasar Kormákur decided to turn the story in the film into a group play.
7. The film was released in 2015, the second year since 1974 that no one has successfully summited Mount Everest. In 2014, the Sherpas cancelled the mountaineering festival that year due to an accident that killed 16 people.
8. The story and some scenes in the film are based on the 1998 IMAX documentary film Everest (1998).
9. Lou Kasischke, the film consultant and survivor of the accident, published the book "After the Wind." which narrated the accident at the time.
10. Jason Clarke replaced Christian Bale in both the film and Terminator Genisys (2015).
11. Tenzing-Hillary Airport (called Lukla Airport in the movie) was briefly featured. Considered by many to be the most dangerous airport in the world due to its steep runways and eerie surrounding terrain.
12.Guy Cotter, the film's consultant, is now the leader of the "Adventure Consultants" Adventure Consultants, which is Rob Hall's old job.
13. The movie mentions that Mount Everest is one of "the 8,000". "the 8,000" refers to the 14 peaks in the world that are over 8,000 meters above sea level. Includes: Everest - in Nepal, 8,848 m (29,029 ft); K2 - between Pakistan and China, 8,611 m (28,251 ft); Kangchenjunga - in India, 8,586 m (28,169 ft); Lhotse - in Nepal, 8,516 m (27,940 ft); Makalu - in Nepal, 8,485 m (27,838 ft); Cho Oyu - in Nepal, 8,201 m (26,906 ft); Dhaulagiri I - in Nepal, 8,167 m (26,795 ft); Manaslu - in Nepal, 8,163 m (26,781 ft); Nanga Parbat (Nanga Parbat) - in Pakistan, 8,126 m (26,660 ft); Annapurna I - in Nepal, 8,091 m (26,545 ft); Gasherbrum I - in Pakistan , 8,080 m (26,444 ft); Broad Peak - in Pakistan, 8,051 m (26,414 ft); Gasherbrum II - in Pakistan, 8,035 m (26,362 ft) ; Shishapangma - located in Nepal, 8,027 m (26,335 ft).
14. The film has five Oscar nominees: Jake Gyllenhaal, John Hawkes, Keira Knightley, Emily Watson and Josh Brolin.
15. Keira Knightley's part was shot for only six days.
16. The 13-year-old son of director Baltasar Kormákurs plays Beck's son in this film.
17. In reality, Beck Weathers' nose was frozen to death, and he had to have it repaired.
18. Andy 'Harold' Harris and Doug Hansen have yet to be found. Rob Hall's body was found two weeks after the incident, and following the request of his widow Jan, his body was left on the mountain. Scott Fischer's body, as depicted in the movie, was found by his friend Anatoli Boukreev, who moved the body off the climbing route. Nearly a year later, Boukreev found Yasuko Namba's body, building a makeshift tomb to protect it from scavengers. When Yasuko Namba's husband learned the news, he funded an expedition to find his wife's body.
19. Rob Hall is the first non-Sherpa to summit Everest five times, and his wife Jan is the second New Zealand woman to summit Everest. The first is Lydia Bradey.
20.Beck Weathers was taken down the mountain by helicopter, and it was quite difficult for the helicopter to reach Beck's location, which is reflected in the movie. But what the movie doesn't show is that Beck lets a more serious climber board and leave first when the plane can only pick up one person. And if the plane can't return to the mountain again, he will most likely not survive. When asked about the decision later, he said it appeared to be the right decision at the time.
21. During the disaster, the IMAX power shooting team happened to be shooting a documentary on Mount Everest. When the disaster happened, they immediately stopped shooting and joined the search and rescue work.
22. Anatoli Boukreev, a guide for the Mountain Madness team, died on December 25, 1997 while climbing Annapurna, Nepal.
23. The filming of the film was based on various books describing the mountain disaster in 1996, as well as the recording of the day. In a September 2015 interview with Entertainment Weekly, director Baltasar Kormákur confirmed that the original idea for his film was based on disaster survivor Beck Weathers' book "Left for Dead", and went on to say Jon Krakauer's book "Into Thin Air" "It was not used as material for the shoot.
24. Jon Krakauer points out in his book "Into Thin Air" that some lives might be saved if Anatoli Boukreev carried an oxygen cylinder. And Boukreev believes that if climbers are strong enough, they don't need to carry oxygen. The dispute soon turned into a public lawsuit, which has remained unresolved. In 1997 Boukreev published his book "The Climb: Tragic Ambitions on Everest" to refute Krakauer's responsibilities.
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