Mount Everest
Ascent history

George Mallory and Andrew Irvine have an accident while attempting to climb Everest. It remains unclear to this day whether they reached the summit
First ascent of Mount Everest by Edmund Hillary and Tenzing Norgay from the Nepalese south side

First ascent of Mount Everest via the Tibetan north side by a Chinese expedition

First ascent of the west ridge and the Hornbein Couloir and then the first traverse of Mount Everest by an American expedition

First ascent of Mount Everest without the use of artificial oxygen by Reinhold Messner and Peter Habeler

First winter ascent on the southern route through the Poles Leszek Cichy and Krzysztof Wielicki

First solo ascent of Mount Everest through the northern flank by Reinhold Messner

First serious accident of a commercial expedition, from which the classic "Into thin air" by Jon Krakauer emerged

Hans Kammerlander manages the first ski descent from Mount Everest by the north side of the mountain

One of the worst accidents in the history of Mount Everest to date: an avalanche kills 16 Sherpas in the Khumbu Icefall
A severe earthquake in Nepal triggers an avalanche that devastates Everest base camp. 18 climbers are killed