Meanwhile the Adversary of God and Man, Satan, with thoughts inflamed of highest design, Puts on swift wings, and toward the gates of Hell Explores his solitary flight; sometimes He scours the right hand coast, sometimes the left; Now shaves with level wing the deep, then soars Up to the fiery concave towering high. As when far off at sea a fleet descried Hangs in the clouds, by equinoctial winds Close sailing from Bengala, or the isles Of Ternate and Tidore, whence merchants bring Their spicy drugs; they on the trading flood, Through the wide Ethiopian to the Cape, Ply stemming nightly toward the pole: so seemed Far off the flying Fiend. At last appear Hell-bounds, high reaching to the horrid roof, And thrice threefold the gates; three folds were brass, Three iron, three of adamantine rock, Impenetrable, impaled with circling fire, Yet unconsumed. Before the gates there sat On either side a formidable Shape. The one seemed woman to the waist, and fair, But ended foul in many a scaly fold Voluminous and vast, a serpent armed