To finish his book Mad Dogs and Englishmen: An Expedition Round My Family, explorer Sir Ranulph Fiennes enlisted the help of yaks.
Documents unearthed in the dusty attics at Broughton Castle, near Banbury, were packed into containers and trekked by yak to Everest Base Camp so that he could finish his family history.
“The papers came boxed up in 45 containers and were transported by yak to the base camp. I was able to complete the book by writing in between acclimatisation exercises on the mountain. [Link]