For five years Mark Horrell has been writing what has been described as one of the most credible Everest opinion blogs out there. He writes about trekking and mountaineering from the often silent perspective of the commercial client. For over a decade he has been exploring the world's greater mountain ranges and keeping a diary of his travels. As a writer he strives to do for mountain history what Bill Bryson did for long-distance hiking. Several of Mark's expedition diaries are available as quick reads from the major online bookstores. His first full-length book, Seven Steps from Snowdon to Everest, about his ten-year journey from hill walker to Everest climber, was published in November 2015.