Why Did Aeneas Go to the Underworld?

Wanting to descend to the underworld in order to visit the spirit of his father, he begs her for help in going there. The sibyl tells Aeneas that he must find and pluck a golden bough from a tree in an adjacent forest. The bough will allow him to enter the underworld.

Who tells Aeneas to go to the underworld and for what purpose?

The Sibyl informs him that to enter Dis with any hope of returning, he must first have a sign. He must find a golden branch in the nearby forest. She instructs him that if the bough breaks off the tree easily, it means fate calls Aeneas to the underworld.

Who was Aeneas guide through the underworld?

Aeneas, with the guidance of the Cumaean Sibyl, descends into the underworld. They pass by crowds of the dead by the banks of the river Acheron and are ferried across by Charon before passing by Cerberus, the three-headed guardian of the underworld.