Newly discovered letters written by legendary mountaineer George Mallory to his mother in the lead-up to his fatal 1924 Mount Everest expedition offer a poignant glimpse into his final thoughts. In one letter, Mallory described the world's tallest peak as "a terrible formidable mountain." He also sought to reassure his family, writing, "I shall take every care I can." Mallory, who was born in Mobberley, Cheshire, disappeared on Mount Everest in 1924. His body remained missing for 75 years before being found.

One of the newly revealed writings noted that "the ink has begun to freeze," indicating the harsh conditions he was facing. The letters were discovered by his great-nephew, Bill Newton Dunn, 84, who described the writings as "a precious family archive."

"The letters mean a lot to me because they mention my grandmother [Mallory's sister] Mary, so it's a precious family archive and these are historical documents, so its important that they are well-looked after when they are sold," Newton Dunn stated. Photograph of the Cheshire mountaineer George Mallory. The black and white image shows him as a schoolboy in his uniform.

The collection of letters, along with photographs and an ice axe believed to have belonged to Mallory, was recently auctioned by Sotheby's. The discovery adds a personal dimension to the enduring mystery surrounding Mallory's final ascent and the exact circumstances of his death on the slopes of Everest.