Pluto (mythology) authorship of the lyrics that have survived as the "Orphic Hymns", among them a hymn to Pluto. Orpheus's voice and lyre-playing represented a medium of revelation or higher knowledge for the mystery cults. In his central myth, Orpheus visits the underworld in the hope of retrieving his bride, Eurydice, relying on the power of his music to charm the king and queen of Hades. Greek narratives of Orpheus's descent and performance typically name the ruler of the underworld as "Plouton", as for instance in the "Bibliotheca". The myth demonstrates the importance of Pluto "the Rich" as the possessor of a
Eridanos (river of Hades) with the excavations for construction of the Athens Metro. Eridanos is the name that has been applied by geologists to a river which flowed where the Baltic Sea is now, a river system also known simply as the "Baltic River System". Eridanos (river of Hades) The river Eridanos or Eridanus (; , "Amber") is a river in northern Europe mentioned in Greek mythology and historiography. Hesiod, in the "Theogony," calls it "deep-eddying Eridanos" in his list of rivers, the offspring of Tethys and Oceanus. Herodotus suspects the word "Eridanos" to be essentially Greek in character, and notably forged by some