Spitzer IRAC2 image of IRAS 16293−2422 (color scale), overlaid with HC₃N (contours). The IRAC2 image shows the E–W outflow cavities but does not show structures relating to the NW-SE outflow. The HC₃N west ridge matches with the western lobe of the E–W outflow. The N–S ridge is not related to the outflow cavity walls, but its chemistry may be impacted by the eastern lobe of the E–W outflow.