Massive prominence with a line current i located at the height h above the photosphere in the magnetic dip configured by two photospheric currents I, with d being the half-distance between the currents. The mirror current i generated by the conductive properties of the photosphere is located strictly below the prominence. The field lines of the total magnetic field produced by the photospheric, mirror, and prominence sources are shown for h = 0.5 d and i = 0.5 I.