Everest’s great mystery solved? Sandy Irvine’s remains found 100 years after tweed-clad climber vanished - Whether Irvine and Mallory reached the peak of Everest remains one of climbing’s great myster

The find comes 25 years after Irvine's climbing partner George Mallory’s frozen body was also discovered on the Himalayan peak.

A National Geographic team discovers a preserved boot with Andrew Irvine's name on it, providing significant evidence in solving the nearly 100-year-old mystery of Irvine and Mallory's ill-fated 1924 Everest expedition.

A group led by filmmaker Jimmy Chin found the boot of Andrew "Sandy" Irvine, the British climber who vanished on Everest alongside George Mallory in 1924. Experts say the mystery involving the duo remains.

In his final letter to his wife, Ruth, before he vanished on Mount Everest a century ago, the 37-year-old Mallory, who once famously said he wanted to conquer Everest "because it's there," tried to ease her worries even as he said his chances of reaching the world's highest peak were "50 to 1 against us.