L1622 cloud and its surroundings. The gray background image shows the mask of filamentary network traced by getfilaments (Men’shchikov 2013). Within the getfilaments mask the color scale represents column density values in the column density map (Fig. 2 left). Angular scales up to 100′′ are shown, which corresponds to ~0.2 pc at d = 400 pc. Left: overplotted thicker blue skeletons mark the robust filament crests from the DisPerSE (Sousbie 2011) sample (see Sect. 3.2 for details). The latter sample together with the thin cyan crests make the DisPerSE raw sample of filaments.Right: overplotted blue crosses mark robust prestellar cores in the northern region.