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) Asia
                                         (Mainland) Asia
                                           (Mainland) Russia (Asia)
                                             (Region) Siberia s.s. (Russia)
                                               (Region) Baikalian Region (Russia: Eastern Siberia)
                                                 (Plateau) Baykalo-Olekminskoye Nagor'ye (Russia)
                                                   (Mountain Range) Severo-Baykal’skoye Nagor’ye (Russia)
                                                     (Mountain Range) Khrebet Akitkan (Russia: Irkutskaya Oblast')