Sources with membership probabilities ≥90% and consistent with ages <30 Myr (black dots) overplotted on the Planck 857 GHz image (left) and DSS red image (right) of the region around Berkeley 56. The sources that are likely located in the background, associated with the southern filaments, are marked with blue crosses. The solid orange circle encompasses the entire region (r=2°), the dashed blue circle shows the region in which the training sample was selected (r=30′), and the dotted black circle shows an extent of the cluster as derived from the radial profile (r=18′). The white star shows the position of the center of Berkeley 59 derived in Section 5.1.