PACS image of L1448 at 1670 GHz in false colors, with the negative contours in dotted line, and the JCMT CO(3−2) emission (Nisini et al., in prep.) in contours: the blue-shifted emission is integrated between –100 and 4 km s^-1 and the red-shifted emission between 6 and 100 km s^-1. The central position of the map and the positions chosen for the HIFI line survey (R4 and B2) are marked with a green cross. For the latter two positions the largest and the smallest HIFI beam sizes are shown in green.