Dust density predictions on the plane of sky. Each panel represents a slice through the cloud at fixed distances (every 30 pc at closer distances and 20 pc around the main structure). The presence of the foreground cloud to Orion A is evident at the 345-pc panel. The tail of Orion A (around l = 213, b = −19) appears in multiple panels, illustrating the extent of the cloud to larger distances. The over-density at about 400 pc and higher latitude belongs to the lower part of Orion B. The boundaries of Orion A and Orion B in the sky projection are shown by dotted lines (Lombardi et al. 2011). The three symbols (square, circle, and triangle) represent specific l.o.s along the Orion A filament investigated in Fig. 4. For illustration purposes, the image is smoothed with the scale length of 0.4 degrees (see Fig. 1 for more details of the plotting method).