Multicolor image combining the five HST filters, with the outline of the PACS [C II]-detected PDR from P. Cigan et al. (2016, large gray circle) and CO cores (smaller magenta circles) overlaid (M. Rubio et al. 2015). The large black rectangle outlines the environment outside the PDR considered in this work. The legend shows the color assigned to each filter. We also include the 11﹩\mathop{.}\limits^{^{\prime\prime} }﹩5 (55 pc) PACS beam size, which is the resolution of the PDR, in the bottom-right corner.