Zero-moment maps of representative transitions of molecular species related to the Shock group (see Section 3.3). The dashed contour level in the panels is −0.03 Jy beam−1 km s−1, corresponding to approximately −5σ. The two red crosses mark the position of Sources 8 and 10. For ease of comparison, we show the NW cloud, the N-red cloud, the NEC-wall, and the position of the Diffuse Ridge together with the DR(a), (b), and (c) positions (black crosses) defined in Section 3.2 and Figure 7.