Projected stellar mass density maps of two DIANOGA PC regions, which are the progenitors of clusters of total mass M_200c equal to 5 × 10¹⁴ M_⊙ and 2 × 10¹⁵ M_⊙ at z = 0 (left and right panel, respectively). In each panel, the larger red dashed circle corresponds to the PC region as defined in the text, while the smaller circles show the R_200c of halos in these regions with M_200c > 10¹³ M_⊙. Densities are computed in pixels of size 15 (10) kpc in the right (left) panel.