Channel maps of continuum-subtracted SO₂ 8(2,6)−7(1,7) emission within ±0.5′′ of the central source of HH212. The velocity offset from the systemic velocity (V_sys = 1.7 km s^-1) is indicated (in km s^-1) in the upper right corner with blue and red contours denoting blueshifted and redshifted emission. The channel width is 1 km s^-1. First contour and steps corresponds to 4σ and 6σ (σ = 1 mJy/beam), respectively. The C³⁴S cavity boundary from Fig. 1 is drawn in magenta dashed lines.