Left: total column density map derived from NIR extinction measurements (Kainulainen et al. 2016). The contours are equally spaced every 2 mag in A_V. The 300 positions surveyed by our APEX observations in both the ¹³CO and C¹⁸O (2–1) lines are marked in green following the main axis of this filament. The red star in the upper left corner denotes the position of the TTauri IRAS12322-7023 source. Right: ¹³CO (2−1) (red) and C¹⁸O (2−1) (blue; multiplied by 2) line profiles found in different representative positions along this cloud (spectra 1−18), all labeled on the map. The averaged spectra of all the data available inside this region are also shown in the upper right corner of the extinction map.