The few travellers who have visited these regions agree in describing a phenomenon, the cause of which is still a mystery to geologists, and which imparts to the lonely depths of these unappropriated and unviolated shades an effect intensely and indescribably mournful. The granite rocks which border the river, and extend far into the contiguous woods, assume strange, fantastic shapes; and are covered with a black incrustation, or deposit, which contrasted with the snow-white foam of the waves breaking on them below, and the pale lichens which spring from their crevices and creep along their surface above, give these shores an aspect perfectly funereal. Between these melancholy rocks--so high and so steep that a landing place seldom occurred for leagues together--the canoe of Father Gomez slowly glided, though urged against the stream by eight robust Indians. The unhappy Guahiba sat at first perfectly unmoved, and apparently amazed and stunned by her situation; she did not comprehend what they were going to do with her; but after a while she looked up towards the sun, then down upon the stream; and perceiving, by the direction of the one and the course of the other, that every stroke of the oar carried her farther and farther from her beloved and helpless children, her husband, and her native home, her countenance was seen to change and assume a fearful expression. As the possibility of escape, in her present situation, had never once occurred to her captors, she had been very slightly and carelessly bound. She watched her opportunity, burst the withes on her arms, with a sudden effort flung herself overboard, and dived under the waves; but in another moment she rose again at a considerable distance, and swam to the shore. The current, being rapid and strong, carried her down to the base of a dark granite rock which projected into the stream; she climbed it with fearless agility, stood for an instant on its summit, looking down upon her tyrants, then plunged into the forest, and was lost to sight. Father Gomez, beholding his victim thus unexpectedly escape him, sat mute and thunderstruck for some moments, unable to give utterance to the extremity of his rage and astonishment. When, at length, he found voice, he commanded his Indians to pull with all their might to the shore; then to pursue the poor fugitive, and bring her back to him, dead or alive.