While Falerina is explaining the danger of the enterprise, Orlando sees Rinaldo's arms, erected in form of a trophy, amongst other spoils made by the villain; and forgetting their late quarrel, determines upon revenging his friend. A desperate contest ensues between the churl and the knight, during which Falerina flies. The combatants (as in the case of Rinaldo) both grapple, and sink together in the water. Arrived at the bottom, Orlando finds himself in another world, upon a dry meadow, with the lake overhead, through which shone the beams of our sun; the meadow being on all sides surrounded by a crystal wall. Here the battle was renewed, and in this Orlando had an advantage, which none had hitherto possessed. Besides that he was himself invulnerable, he was now in possession of the sword, tempered by Falerina, against which no spells could avail. Thus armed, and countervailing the strength of his adversary by his superior skill and activity, he had the good fortune to lay him dead upon the field.

Orlando having slain his foe, discovers a gate in the crystal wall; and having passed through a dark labyrinth, comes at last where it is lighted by a carbuncle, whose lustre was equal to that of day. This discovered to his view a river little less than twenty-yards over, and beyond this was seen a field as thickly covered with precious stones as the sky is full of stars.

Over this was thrown a bridge, only half a palm wide, and at each end was stationed an iron figure with a mace. Orlando no sooner attempted to pass this, than the figures smote upon it, and it was instantly engulphed in the stream. Orlando however, being resolved to accomplish the adventure or perish in the attempt, leapt the river and arrived in the field, which contained the treasures of the fairy.

When he had arrived at the other extremity of this, he entered a building, where he beheld the likeness of a king, surrounded by his peers, and encompassed by all the pomp and magnificence of royalty. The monarch appeared to be seated at a banquet, with a naked sword suspended over his head, and on the table before him was a live coal, supported on a golden lily, which gave light to the apartment. On his left stood a figure with a bended bow in guise of one who waits the crossing of the stag; and on the right, the form of one, who, from his likeness to the king, appeared to be his brother, and who bore in one hand a writing illustrative of the vanity of his worldly pursuits.

The troubled countenance of the king seemed to bear witness to the truth of the inscription; and Orlando, having satisfied his curiosity, departed through the door opposite to that by which he had entered. He was however no sooner out of the apartment, than all was darkness.

After wandering for some time at random, he bethought himself of the coal, which was burning before the king, and returned in order to take it. He had however no sooner laid his hand upon this, than the archer let fly his arrow, which extinguished it, and night followed. This was rendered terrible by an earthquake, which shook the world to its centre. The earthquake at last ceased, the light rekindled of itself, and all was as before. Again Orlando issued through the dark passage, again was compelled to return in search of the coal, and again witnessed the same effect.

A third attempt was more successful: he intercepted the arrow with his shield, and carried off the light in safety. Using this as a lamp, Orlando arrived where the way divided; and turning to the left, instead of the right (which would have conducted him out of the building) took the road which led to the dungeons of Morgana. Here were imprisoned Rinaldo, Dudon, Brandimart, and others who had fallen into the power of Morgana; but the count did not immediately arrive at their place of confinement. Still guiding himself by his light, he came to a cleft in the rock, through which he passed into a flowery meadow, planted with trees covered with fruit and flowers, and full of all imaginable delights.

In the middle of this was a fountain, and fast by it lay Morgana asleep; a lady of a lovely aspect, dressed in white and vermilion garments; her forehead well furnished with hair, but with scarcely any behind.

While Orlando stood in silence, contemplating her beauty, he heard a voice exclaim, "Seize the fairy by the forelock if thou hopest fair success;" Orlando turning, and advancing in the direction from which the voice came, discovered a prison of crystal in which he beheld the captives of Morgana.

At the sight of these, he raised his sabre to smite the wall; but was advertised by a female prisoner that all attempts to release them would only be productive of new misery to those he sought to benefit, unless he could take Morgana herself, and force from her the keys of their prison-house.