ZTH is a reversed field pinch, magnetically confined fusion experiment which is under construction at the Los Alamos National Laboratory. Construction began in October 1985, and will be completed in late 1992 or early 1993. ZTH will provide information about the physics and engineering operation of a plasma confinement alternative to the tokamak, which has the potential for development into a compact reactor system. The following discussion will give the reader: a general overview of ZTH and its supporting equipment, a brief indication of the present status of construction and an indication of future activities.