LIRKIS CAVE is a contemporary Cave Automatic Virtual Environment, developed and built at the home institution of the authors. Its walls, ceiling and floor are covered by stereoscopic LCD panels, user movement is tracked by OptiTrack cameras and scene rendering is carried out by a cluster of seven computers. The most unique feature is a portable design. It allows for disassembly of the whole CAVE to transport it to another location. The paper describes the hardware and software of the CAVE and presents results of several performance evaluation experiments. It also deals with current and future applications of the CAVE, which fall into the area of cognitive infocommunications and are primarily aimed toward impaired people.