Ahead of the 30th anniversary of the 1996 Mount Everest disaster, Wānaka resident Guy Cotter sat down with RuairiO’Shea to reflect on the tragedy, and the lessons learned from a life leading expeditions in one of the most hostile places on Earth. Thirty years ago this weekend, Wānaka’s Guy Cotter watched as a storm rolled toward Mt Everest, and he knew his friends were in danger. What followed was one of the most infamous disasters in the history of climbing on the world’s highest peak, with Mr Cotter’s pivotal role in the rescue told in Jon Krakauer’s 1997 best-seller Into Thin Air and the 2015 blockbuster Everest .…