On 18 April 2014 , a serac collapsed above the Khumbu Icefall on Mount Everest , causing an avalanche of massive chunks of ice and snow which killed 16 Nepalese guides , mostly Sherpas . The 2014 avalanche is the second-deadliest disaster in Everest 's history , only exceeded by avalanches in the Khumbu Icefall area a year later , on 25 April 2015 , caused by a magnitude 7.8 earthquake in Nepal . In response to that tragedy and others involving deaths and injuries sustained by Sherpas hired by climbers , and the lack of government support for Sherpas injured or killed while providing their services , some Sherpa climbing guides walked off the job , and some climbing companies are no longer providing guides and porters for Everest expeditions
magnitude 7.8 earthquake in Nepal
April 2015 Nepal earthquake
Sherpa people