Oculus source of light
The Pantheon is a symbolic place that often returns in the art of Morella, who had already dedicated the first of the works of the Blind Wood cycle to it. What makes this monument unique is precisely the 9-metre oculus placed in the centre of the vault (and in the work Oculus made even more visible by the gold insert): not only is it the only source of light, but it also constitutes a calendar and astronomical instrument: in the different seasons, the sun's rays reach specific portions of the building, tracing the equinoxes and solstices. Moreover, the vaulting reproduces a heliocentric system where the sun is the central oculus. The coffered motif, arranged according to five concentric circles, represents the then known and visible planets (Mercury, Venus, Mars, Jupiter and Saturn).