is an unincorporated community in southern McDonald County, Missouri, United States. It is located on U.S. Route 71 immediately north of the Missouri-Arkansas state line, opposite Bella Vista. Several businesses are located there. It is part of the Fayetteville–Springdale–Rogers, AR-MO Metropolitan Statistical Area.
"Caverna is located near the Arkansas line on Little Sugar creek and has a water mill and store. This has been a mill site for the last fifty years or more. The water power is fine and capable of running more than ten times the machinery it now operates. Should a rail road ever be built through that part of the county it is liable to become a flourishing little town. The post office was established here about 1867. There are numerous caves in this vicinity, some quite extensive, and the name was derived from them."(History of McDonald County, Missouri, by Judge J. A. Sturges, 1897)
Area 71 is the unofficial title for Wal-Mart's 125,000-square-foot (11,600 m2) datacenter which is located in Caverna, Missouri near the Arkansas border. The datacenter has a supposed capacity of over 460 terabytes of data, or 460,000,000,000,000 bytes of data. Area 71 is built directly on top of bedrock which gives it maximum strength to withstand many natural and man made disasters. It is also self-sufficient with generators and the capability to retain data link with the Wal-Mart network using copper wire, fiber optic cable, or satellite communications. Some speculate that the datacenter was created to link video footage with customers buying products to build a database as to when and what kind of person buys a certain product. It can also be used to develop trends in purchasing before major events (i.e. natural disasters, holidays) so that Wal-Mart executives can better stock store shelves in anticipation of this event.
Wal-Mart also uses Area 71 to control many functions of Wal-Mart stores. This includes turning the lights on and off, adjusting the climate control, and playing the in store music. Also run from the data center is the computer system that employees use to “clock in” at each location and also provides email to keep employees informed of events that are pertinent to their job function. Area 71