Hristo Prodanov

Hristo Prodanov was a Bulgarian mountaineer. He was the first Bulgarian to climb Mount Everest, doing it via the most difficult way—the West Ridge—as well as alone and without oxygen. He was the first person to climb Everest in April, when the weather conditions are generally too bad for an expedition, and also the thirteenth person to climb Everest without the use of bottled oxygen. Climbing the summit at 18:15 local time he had to descend overnight and got lost shortly after that. On the next afternoon he reported he has lost his gloves and soon he won't be able to hold the radio button long enough to talk. His body was never found.