At the centre of the vault, enriched by a light blue and red decoration in stucco with vegetal motifs, there is a central square which shows a painting of Caesar who is ordering the destruction of the letters by Pompey. Also here the main theme is the magnanimity of the ruler. By destroying these letters, Caesar was preventing Pompey's plots against the state from becoming public, so that the memory of his defeated enemy would be, at least in part, preserved.