conceptHorizonCosmosThe skyline where earth or sea meets sky for an observer. Not ecliptic, and not a metaphor dump alone.Roman religionHorizon appears in Roman religion.Pliny’s Natural History treats the horizon as the sky-edge where risings and settings are judged. A named horizon edge in that encyclopedia, not zenith as the overhead point and not a modern coordinate dump.from Pliny the Elder · Natural History, c. 77 CEappears in · sourced · documentedsourcesNatural History · Pliny the ElderPliny, Naturalis Historia.