Expedition climbing (or expedition style or siege climbing), refers to mountaineering which involves setting up a fixed line of stocked camps on the mountain that can be accessed at one's leisure, as opposed to alpine style where one carries all of one's food, shelter, equipment, etc. as one climbs. Expedition style also incorporates the use of fixed ropes, and climbers (and the porters they frequently employ) will travel up and down the route several times to fix ropes and set up camps, while Alpine style eschews fixed ropes, porters, and camps, and climbers usually only climb the route once in a continuous push.^[1] Expedition style was the type of climbing Sir Edmund Hillary and Tenzing Norgay used in the first summitting of Mount Everest.

• 1950 French Annapurna expedition
• 1952 British Cho Oyu expedition
• 1953 German–Austrian Nanga Parbat expedition
• 1953 British Mount Everest expedition
• 1954 Italian expedition to K2
• 1955 French Makalu expedition
• 1955 British Kangchenjunga expedition
• 1970 British Annapurna South Face expedition
• 1975 British Mount Everest Southwest Face expedition