Herschel 250 μm surface brightness image of the Pipe molecular cloud observed as a part of the HGBS key project (cf. Peretto et al. 2012). The image is displayed at the diffraction limited 250 μm beam resolution of 18.̋2. The 43 filaments traced with the DisPerSE algorithm (Sousbie et al. 2011) are highlighted in white. A more detailed view of the filament enclosed by the black dashed rectangle is shown in Fig. 2. (This figure is available in color in electronic form.)