A VR CAVE is a virtual reality space; essentially an empty room in the shape of a cube in which each of the surfaces – the walls, floor and ceiling – may be used as projection screens to create a highly immersive virtual environment. 3D CAVE users typically wear stereoscopic eyewear and they interact with visual stimulus via wands, data gloves, joysticks, or other input devices.
The word CAVE itself is an acronym that stands for Cave Automatic Virtual Environment.