Canadian climbers hold a significant place in the annals of Everest mountaineering. Two expeditions stand out: the tragic 1982 expedition in which four Canadian climbers were killed, several others quit, and six managed to summit against all odds; and the 1986 ascent, which established a new route via Tibet and saw the first North American woman reach the peak.

A newly published iBook relives these expeditions in vivid detail, told in the voices of two climbers who were there: Pat Morrow, who summited in 1982, and Sharon Wood, who followed in 1986. Designed to make the most of the iPad platform, Everest: High Expectations is not a conventional book but a unique immersive experience that captures the chaos and exhilaration of the Mount Everest phenomenon. Take your pick from multiple entry points: 150 photographs, interactive slide shows, or archival audio and video clips, all putting you on the mountain.

Morrow is a celebrated photojournalist and Wood an alpine guide, both based in Alberta. They write candidly about the challenges they faced, the differences in tackling the mountain from the Nepal and Tibet routes and the changes in the mountaineering ethos over the past 30 years. In the 1980s, you wouldn’t think of setting foot on Everest without experience, technical skills and physical fitness. Fast forward to today, when people who have no business on the mountain shell out $100,000 to be led to the top.

Mount Everest remains powerfully alluring. This Canadian perspective shows how it can be both a fabulous and fatal attraction.

Everest: High Expectations is available from the iTunes Store.