Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       Astra Plinius - celestial bodies
         Universe
           (Supercluster) Virgo-Hydra-Centaurus Supercluster
             (Supercluster) Virgo Supercluster
               (Cluster) Local Group
                 (Galaxy) Milky Way Galaxy veter.
                   (Spiral arm) Orion Arm
                     (Region) Local Bubble
                       Local Interstellar Cloud
                         (Planetary system) Solar System
                           (Planet-satellite system) Earth System
                             (Planet) Earth veter.
                               "spheres" (Earth)
                                 (Sphere) "surface" (Earth)
                                   (Continent) Afro-Eurasia
                                     (Continent) Eurasia
                                       (Continent) Europe
                                         "Greece" (Europe; coast)
                                           (Archipelago) Cyclades (Greece: Kykládes)
                                             (Island) Nísos Thíra (Greece: Kykládes)
                                               (Volcano) ‡Thera volcano (Nísos Thíra)
                                                 Phenomenon eruptions (Thera volcano)
                                                   1 (Event) Minoan eruption (1627 BCE - 1600 BCE)