In Greek Mythology, the place that most resembles the description of "dark and gloomy cave" is Tartarus.
Tartarus is described as a "a deep, gloomy place, a pit, or an abyss used as a dungeon of torment and suffering that resides beneath the underworld," meaning that Tartarus was not between Heaven and Hell, but rather was the closest Greek analog to the Christian hell.
Alternatively, in Roman Mythology, the entrance to the Underworld was through Avernus, a crater in Cumae, Italy.
The Underworld of Ancient Mythology was not merely 'dark and gloomy', it was as differing as we imagine our own world to be above ground. It was often called Hades, after the Greek god who ruled it.
No. The are not "the same". The Greek goddess Chaos means invisible air and gloomy mist; the gap, the space between heaven and earth. Nun/Nu and Naunet were two of the eight Ogdoad (a set of four goddesses and four gods). The name of the water of chaos was Nun.
Hera
Hera
Hades, which is in Greek and Roman mythology, is both a place for heaven and hell. So all dead people go to Hades according to Greek and Roman mythology.
The Elysium Fields
In Greek mythology, the rainbow was considered to be a path made by a messenger (Iris) between Earth and Heaven. In Chinese mythology, the rainbow was a slit in the sky sealed by Goddess N
Heaven: the sky-dome.
Classical china did not use the Mandate of Heaven to select their leaders, but rather used a civil service exam that chose authority passed on their scores.
In mythology, Greece is referred to as the land of Gods.
Jupiter was ruler of Heaven and Earth.
Its sibling is Heaven and his father is Chaos