Did Mallory Make it to the Top of Everest First?

What It Covers

George Mallory's three expeditions to Mount Everest between 1921 and 1924 and the unresolved mystery of whether he summited 29 years before Edmund Hillary. The episode traces the evidence, eyewitness accounts, and physical clues that keep the question open a century later.

Key Questions Answered

• •Summit timing window: Reaching Everest's peak requires strict adherence to a departure schedule because arriving even a few hours late eliminates any realistic chance of descending safely before nightfall. Mallory and Irvine were spotted several hours behind schedule on June 8, 1924, which is why most analysts conclude they likely died on descent regardless of whether they summited.
• •The Second Step as decisive evidence: The Northeast Ridge contains three rock steps before the summit. Eyewitness Noel Odell, a geologist with documented exceptional eyesight, maintained until his death that he saw two figures clear the Second Step — the final major obstacle. Climbing historians argue that clearing the Second Step makes a successful summit virtually certain given Mallory's documented refusal to turn back.
• •Physical evidence hierarchy: When Mallory's body was recovered in 1999 at roughly 27,000 feet, investigators prioritized three items: a photograph of his wife he had vowed to place at the summit (absent from his body), a Kodak vest pocket camera (never found), and rope trauma suggesting a fall rather than a deliberate camp return, each pointing toward a summit attempt rather than a turnaround.
• •Oxygen equipment as expedition variable: Early Everest expeditions carried oxygen in heavy glass bottles inside wooden crates, adding roughly 30 pounds per climber. Mallory initially resisted using supplemental oxygen across the 1921 and 1922 expeditions. By 1924, the team brought Sandy Irvine specifically because his engineering background allowed him to modify and improve oxygen apparatus efficiency, directly influencing how high they could realistically climb.
• •North versus South route difficulty: The Tibetan north route, used by Mallory, requires 22 miles of travel from base camp to summit versus 12.75 miles on the Nepalese south route used today. The north route also demands more time at extreme altitude. China closed the north route to Westerners after invading Tibet in 1950, which is why a 1975 Chinese climber's reported discovery of an English body there went uninvestigated for decades.