Everest: Into Thin Air

I watched the first 2 episodes of "Everest: Beyond the Limit"  via Netflix produced by the Discovery Channel.  What an amazing and excruciating climb.  One of the Sherpas died from altitude sickness and another climber from the Indian team had pulmonary edema and almost died.  At advanced base camp, which is 21,000 feet above sea level, more than 600 climbers await to climb Everest.  I can't believe that many wait to go up a mountain.  There is much worry with guides about traffic jams in tight spots as the climbers ascend/descend.  More to come on this series.