ALMA band 10 images of the integrated intensity of the redshifted high-velocity gas (−3 to +2.5 km s⁻¹; the systemic velocity is −7 km s⁻¹) for the (a) ground state of HDO and the (b) CS (18–17) transition showing a highly collimated north–south outflow emanating from MM1. Blueshifted high-velocity emission (not shown) is co-spatial with the redshifted emission, but is much weaker. The 0.35 mm continuum is the same as Figure 1. White circles show the locations of H₂O masers detected with the VLA in epoch 2017.8 (Brogan et al. 2018). Primary beam correction has been applied with a cutoff at 0.25 of the FWHM. The synthesized beam of 0.″23 × 0.″16 (PA = 39°) is shown in the lower right of each panel.