Found this via reddit. Mt. Everest has around 200 dead bodies on the mountain. It is nearly impossible for recovery of a body off the mountain. Most of the bodies are in the same exact position they were when they died. Perfectly preserved in time because of the cold. Along the route up to the summit climbers will pass all these bodies. There are bodies over 50 years old that look like they were placed there yesterday. The "death zone" is 26,000 feet. Air is so thin that there is no margin for error. Immediate frostbite will happen. Lack of oxygen leaves climber bewildered and weak. Cost for one to go on a trip is $25,000. Several bodies are given names. This one is "green boots". Many of the bodies are now landmarks along the way up. "green Boots" has been there since 1996.
George Mallory died up there I believe in 1922.He is perfectly preserved like he died yesterday,so that is 90 years.There is one hiker who died right on a well used trail.He is sitting with his knees to his chest.One has to hike right by him to get to the top. It's simply too hard to get the frozen bodies back down,so they just leave them up there. Mt.Everest is 29,029 feet altitude.At that height the air is to thin for heliocopters.The blades have nothing to cut into and they can't fly up there,so you can't use them to transport the bodies back down.The choppers cannot operate above 26,000 feet.