a) Contours show the integrated intensity map of CH overlaid on the color image of the [C I] (: 492 GHz) distribution taken with the Mount Fuji Submillimter-Wave Telescope (Maezawa et al. 1999). The velocity range of the integration for the CH line is from 5.0 to 7.2 km s^-1. The lowest contour and the contour interval is 0.1 K km s^-1. b) Contours show the integrated intensity map of CH overlaid on the color image of the C¹⁸O (J = 1−0) distribution taken with the Nobeyama 45 m telescope (archival data). The velocity range of the integration of the C¹⁸O line is from 5.0 to 7.2 km s^-1.