Herschel FIR 250 μm images of NGC 4330, NGC 4522, and NGC 4654 (orange) overlaid on the mean extinction map of the Virgo intra-cluster dust (green and yellow trace mean values ⟨E(B − V)⟩ = 0 and ⟨E(B − V)⟩ = 0.07, respectively) by Longobardi et al. (2020, here the regions in space that are contaminated by background clusters are in grey). The three galaxies are magnified by a factor of ∼13 to show the details of the FIR emission. The extinction map shows that the intra-cluster dust is present within ∼1.2 Mpc (0.7 virial radii) around the dynamical centre of the cluster (sub-cluster A), as identified by the X-ray emission (Rosat contours from Böhringer et al. 1994).