H₂ image of the Orion KL region (Bally et al., in prep.) overlaid with an integrated intensity SMA map of CH₃CN(12₃–11₃) (green contours), the positions of the blueshifted and redshifted CO(2 − 1) fingers from Zapata et al. (2009) (blue and red dots, respectively) and a SCUBA 850 μm continuum map from Johnstone & Bally (1999) (brown dashed contours). The green contours are  −2, 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20 times 30 Jy beam^-1 km s^-1, the rms noise of the image. The brown dashed contours are  −2, 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20 times 3.5 Jy beam^-1. The black circles with vectors mark the positions and orientations of the proper motions of the radio and infrared sources BN, I and n (Rodríguez et al. 2005; Gómez et al. 2005). The black open circle with a cross represents the zone from where the three sources were ejected some 500 years ago, and the origin of the Orion KL molecular outflow as suggested by SMA CO(2 − 1) observations (Gómez et al. 2005; Zapata et al. 2009). The beam size of the SMA CH₃CN(12₃–11₃) and the SCUBA maps are shown at the left- and right-hand bottom, respectively. The synthesized beam size of the SMA is 3.′′28 × 3.′′12 with a PA =  −14.0°. The beam size of the SCUBA submillimeter observations is about 14′′.