Named after Edmund Hillary, the first climber to conquer the mountain with Tenzing Norgay Sherpa, the "Hillary Step" is considered the final test of endurance for Everest climbers. The large rocks were "on quite an incline," Mosedale said. "My suspicion is that if anyone was to try and clamber over that remaining rubble and debris that it would cause it to move." JUST WATCHED Climbers Snapchat from Everest Replay More Videos ... MUST WATCH Climbers Snapchat from Everest 02:56"It would probably be quite unstable, and would cause significant hazard to anyone who was below the climber. So really I think it's an area to be avoided now," he said.

Source: CNN May 22, 2017 13:52 UTC