Map of the ¹²CO(7–6) line overlaid on the continuum emission at 870 μm from LABOCA. The velocity axis ranges from −60 to −25 km s^-1, the temperature axis from −1 to 15 K. The ¹²CO(7–6) data were smoothed to a resolution of 18″ to match the resolution of the ¹²CO(3–2) data and of the LABOCA emission. The centre of the map is that of the APEX data (see Sect. 2.1). The triangles and the green star are as in Fig. 2.