Possible magnetic field configuration of peculiar supersonic downflow. The black lines indicate the magnetic field, the black arrows the magnetic field direction. The gas flow is indicated with yellow, red and blue arrows, where blue indicates a blue-shift (upflow) and red and yellow a red-shift (downflow) when viewed from above, similar to the color coding used in Fig. 12. The magenta wavy line indicates the possible location of a current sheet, responsible for the heating in the upper layer of the atmosphere.