In May 1993 the British Mountaineering Council met to discuss the future of high altitude tourism. Of concern to attendees were reports of queues on Everest and reference was made to mountaineer Peter Boardman calling Everest an 'amphitheater of the ego'. Issues raised included environmental and social responsibility and regulations to minimize impacts. In the years that have followed there has been a surge of interest in climbing Everest, with one day in 2012 seeing 234 climbers reach the summit. Participation in mountaineering tourism has surely escalated beyond the imagination of those...