What is a 'Put Option' A put option is an option contract giving the owner the right, but not the obligation, to sell a specified amount of an underlying security at a specified price within a specified time. This is the opposite of a call option, which gives the holder the right to buy shares. BREAKING DOWN 'Put Option'
High Altitude Sickness and Everest Base Camp. One of the major challenges facing trekkers heading to Everest Base Camp or any other high elevation trek in the Himalayas is dealing with the potential threat of High Altitude Sickness. The primary cause of High Altitude Sickness is a decrease in the amount of available oxygen with altitude.
Most climbers require about four days to ascend Mount Everest from Base Camp. The fastest ascent from the north side is held by Hans Kammerlander of Italy and took him 16 hours and 45 minutes from Base Camp. The fastest ascent from the South took just under 11 hours and was accomplished by Lakba Gelu Sherpa. Babu Chiri Sherpa, who was at the summit for 21.5 hours, holds the record for the most time spent on top of Everest. However, people typically spend about an hour at the top on average.