There are two base camps on opposite sides of Mount Everest. One is in Nepal at an altitude of 5,364 metres (17,598 ft) and another is in Tibet at 5,545 metres (18,192 ft). These camps are rudimentary campsites on Mount Everest that are used by mountain climbers during their ascent and descent. South Base Camp is used when climbing via the southeast ridge, while North Base Camp is used when climbing via the northeast ridge.
Supplies are carried to the South Base Camp by sherpas or porters, and with help of animals, usually yaks. The North Base Camp has vehicle access (at least in the summer months). Climbers typically rest at base camp for several days for acclimatization; to reduce the risks and severity of altitude sickness.
The Everest Base Camp trek on the south side is one of the most popular trekking routes in the Himalayas and is visited by thousands of trekkers each year. Trekkers usually fly from Kathmandu to Lukla to save time and energy before beginning the morning trek to this base camp. From Lukla, climbers trek upward to the Sherpa capital of Namche Bazaar, 3,440 metres (11,290 ft), following the valley of the Dudh Kosi river. The village is a central hub of the area, and food, sundries and even mountain climbing equipment may be purchased here.