Same as main camp, in this case. See Main camp.
a camp based in one location, eg: a camping area with vehicle access. Small easy walks may be done during the day, but breakfast and dinner will be held at camp. Sleeping is also done at the base camp. Most camps will access to toilets, showers, drinking water and facilities such as public phones and supplies.
The lowest, largest (and most luxurious) fixed camp on a major ascent.
a resupply base for field units and a location for headquarters of brigade or division size units, artillery batteries and air fields. Also known as the rear area.
In climbing, a 'base camp' may be set up to provide the starting point for a multiple day or week assault on climbing a mountain. 'Base camp' is used to store supplies that are carried to camps higher up on the mountain. On major mountaineering expeditions spanning several weeks or more, an advanced base camp (ABC) may be set up higher on the mountain.