Climbing Mount Everest

Min Bahadur Sherchan died of a heart attack at base camp on Saturday afternoon, according to the Nepal Mountaineering Association (NMA).

"He was in good health. He used to walk 15 kilometers every day. But I think his age was quite a factor," Ang Tshering Sherpa, president of the NMA, told CNN. "He was too old to climb Mount Everest but he had a very strong will."

A 25-year-old named Phurbu Sherpa fell while trying to fix a route just 150 meters below Everest’s summit on Thursday. Eric Arnold of the Netherlands died on Friday while coming back from the summit–a heart attack is suspected. Maria Strydom of Australia died somewhere between Camp IV and the summit on Saturday after a rescue attempt to reach her failed. And Subash Paul died of altitude illness at Base Camp II on Sunday.