The Aeneid by Virgil Book 6 Page 3

You, too, Icarus, would have large share in such a work, did grief permit: twice had he essayed to fashion your fall in gold; twice sank the father’s hands. Ay, and all the tale throughout would their eyes have scanned, but now came Achates from his errand, and with him the priestess of Phoebus and Trivia, Deiphobe, daughter of Glaucus, who addressed the king: “Not sights like these does this hour demand! Now it were better to sacrifice seven bullocks from the unbroken herd, and as many ewes fitly chosen.” Having thus addressed Aeneas – and not slow are the men to do her sacred bidding – the priestess calls the Teucrians into the lofty fane.

The huge side of the Euboean rock is hew into a cavern, into which lead a hundred wide mouths, a hundred gateways, from which rush as many voices, the answers of the Sibyl.