The Geharza Plane is accessed by activating all six of the 'brion crystal rooms simultaneously. The easiest way to accomplish this is to travel to the crystal rooms via the Ethereal Tower.
Inside the Geharza Plane, exiles slide about as if they were on ice. The topology of the plane is similar to that of Purgatory; there is no boundary, but it wraps upon itself. The only exit of the plane is a rift that floats around the plane. Tipulids and Torments inhabit the plane but seem to leave the plane when they come in contact with one of the white clouds that float around the plane. However, when an exile touches such a cloud the exile is merely teleported to another point in the plane.