Comparison between γ-ray emission and molecular clouds in the region of HH 80-81. The color map in the background shows a high-resolution IR map from the band A (8 μm) of the MSX experiment (Egan et al. 2003), which is used to locate HH 80-81 (magenta square). Solid green contours indicate the column density of the molecular gas in the vicinity of HH 80-81. The warm color map displays a detection map based on the square root of the TS related to the three 4FGL sources populating the molecular complex, with magenta crosses locating the other two 4FGL sources apart from HH 80-81. The dashed contour indicates the 5σ detection area of HH 80-81 (see Fig. 2).