Top: integrated intensity contours of the redshifted (in red) and blueshifted (in blue) ¹²CO(2–1) high-velocity wings overlaid on the 70 μm map. The contours start at 10 K km s⁻¹ with increment of 2 K kms⁻¹. The green line and crosses indicate the locations of a spectra presented in the bottom panel with position 3 closely coinciding with the location of the H1 fragment. The white circle at the top indicates the beam size of the ¹²CO(2–1) data. Bottom: ¹²CO(2–1) spectra at the indicated locations in the top panel.