To prepare himself for this fearful journey Hercules went to the city of Eleusis, in Attic territory, where, from a wise priest, he received secret instruction in the things of the upper and lower world, and where also he received pardon for the murder of the Centaur.
Then, with strength to meet the horrors of the underworld, Hercules traveled on to Peloponnesus, and to the Laconian city of Taenarus, which contained the opening to the lower world. Here, accompanied by Mercury, he descended through a cleft in the earth, and came to the entrance of the city of King Pluto. The shades which sadly wandered back and forth before the gates of the city took flight as soon as they caught sight of flesh and blood in the form of a living man. Only the Gorgon Medusa and the spirit of Meleager remained. The former Hercules wished to overthrow with his sword, but Mercury touched him on the arm and told him that the souls of the departed were only empty shadow pictures and could not be wounded by mortal weapons.
With the soul of Meleager the hero chatted in friendly fashion, and received from him loving messages for the upper world. Still nearer to the gates of Hades Hercules caught sight of his friends Theseus and Pirithous. When both saw the friendly form of Hercules they stretched beseeching hands towards him, trembling with the hope that through his strength they might again reach the upper world. Hercules grasped Theseus by the hand, freed him from his chains and raised him from the ground. A second attempt to free Pirithous did not succeed, for the ground opened beneath his feet.
At the gate of the City of the Dead stood King Pluto, and denied entrance to Hercules. But with an arrow the hero shot the god in the shoulder, so that he feared the mortal; and when Hercules then asked whether he might lead away the dog of Hades he did not longer oppose him. But he imposed the condition that Hercules should become master of Cerberus without using any weapons. So the hero set out, protected only with cuirass and the lion skin.
He found the dog camping near the dwelling of Acheron, and without paying any attention to the bellowing of the three heads, which was like the echo of fearful resounding thunder, he seized the dog by the legs, put his arms around his neck, and would not let him go, although the dragon tail of the animal bit him in the cheek.