WikipediaGreen Boots is the name given to the unidentified corpse of a climber that became a landmark on the main Northeast ridge route of Mount Everest. Though his identity has not been officially confirmed, he is believed to be Tsewang Paljor, an Indian climber who died on Mount Everest in 1996. The term Green Boots originated from the green Koflach mountaineering boots that are on the feet of the corpse. All expeditions from the north side encountered the body curled in the limestone alcove cave at 8,500 m (27,900 ft). In 2006, a different climber, David Sharp, died during a solo climb in what is known as "Green Boots' Cave".
https://en.wikipedia.org/wiki/Green_Boots