CO (6−5) high-velocity emission in the L1448-mm/IRS3 system. Blue contours show the blueshifted wing (from −55 km s^-1 to 0 km s^-1) and red contours the redshifted wing (from +10 km s^-1 to +65 km s^-1). The contour spacing is 2σ, with the first contour at 3σ (σ = 3.95 K km s^-1 for blue and σ = 5.65 K km s^-1 for red). The central (0, 0) position is located at the coordinates of L1448-mm source (see Table 2) and indicated by the black square. The black hexagon represents the position of IRS3 (offset −38, + 70). Black contours (solid and dashed) show the CO (2−1) emission from Bachiller et al. (1990), integrated in the same velocity ranges. The black crosses indicate the coverage of the CO (2−1) map, which is roughly identical in CO (6−5). Yellow circles indicate the positions of all clumps reported by Bachiller et al. (1990). Also shown with a black filled circle is the HPBW at the frequency of the CO (6−5) transition.