A BIVOUAC is a temporary camp, usually consisting of a small shelter or tent, that is set up for a short period of time. It is often used by military personnel, hikers, and other outdoor adventurers. Bivouacs are typically used when there is no permanent structure available, such as in remote areas or during times of conflict. They provide a safe and secure place to rest and sleep, and can also be used as a base of operations for activities such as hunting, fishing, and exploring.