In Shipton & Tilman Jim Perrin investigates the prominent duo who in the 1930s became a legend & inspired contemporaries with photos of unknown peaks in the Karakoram. Using unpublished diaries, journals & letters, the authors pays homage to the friendship between the two unconventional climbers who preferred lightweight & self-reliant style of mountaineering. They trekked the Himalayas, crossed Africa by bicycle, explore China & journeyed down the Oxus River to its source. Credited with unlocking Everest & discovering a route to Nanda Devi Sanctuary as well as pioneering many routes in the Nepalese Himalayas, they pushed the limits of human endurance.