According to the author's analysis the Underworld was not a location inside the Earth, but rather it was a huge space station in a geostationary orbit below our planet in space. Aeneas is brought there in a spaceshuttle by his guide the Sibyl and he returns to the Earth by means of a stargate. He observes many unfamiliar phenomenons in the Underworld, which the author explains using modern technological and scientific concepts. The event occurs a short time after the legendary city of Troy was conquered by the Greeks, thousands of years ago.The advanced technology which Aeneas, the son of a human and of the goddess Aphrodite, experiences, was produced by an earlier human species: that of the gods.