Hyperdimension

"Hiperdimensión." Chōjigen. 超次 元 - (ちょ うじ げん). Exceeded the Western Wall this anomaly is reached or hyperdimensión dimensional links and Elysion Hades, is a distortion of space-time that only a divine being can move, an area that extends for tens of thousands of light years behind him, a place where space is destroyed and the ordinary men who dare enter are pulverized. Only the gods or people who received their protection, as the Saints leading cloths soaked with the blood of Athena, and Pandora, which has a special necklace that was given by the god Hades, are able to cross the area without disintegrating immediately. In the original manga and the judge Minos destroyed by Sylphid specter set foot inside, and Cancer Manigoldo suffer the same fate in the prequel manga Saint Seiya The Lost Canvas ~ when Thanatos hyperdimensión opens.

Relationship with the River Lethe
When Charon speaks of Elysion, reveals that the place is on the other side of Lethe, Moreover, in the Divine Comedy, the stream is supposed to make you forget the sins of those who bathe in it. In Saint Seiya, the area between the underworld of Elysion plays a comparable role as "purified" it is not divine annihilation.
 * Shaka with Athena explains that it was beyond the Lethe to search for Hades.