From Vergil's Fourth Georgic.

[VERSES 360 ET SEQ.]     And the cloven waters like a chasm of mountains     Stood, and received him in its mighty portal     And led him through the deep's untrampled fountains     He went in wonder through the path immortal     Of his great Mother and her humid reign     And groves profaned not by the step of mortal     Which sounded as he passed, and lakes which rain     Replenished not girt round by marble caves     'Wildered by the watery motion of the main     Half 'wildered he beheld the bursting waves     Of every stream beneath the mighty earth     Phasis and Lycus which the ... sand paves,     [And] The chasm where old Enipeus has its birth     And father Tyber and Anienas[?] glow     And whence Caicus, Mysian stream, comes forth     And rock-resounding Hypanis, and thou     Eridanus who bearest like empire's sign     Two golden horns upon thy taurine brow     Thou than whom none of the streams divine     Through garden-fields and meads with fiercer power,     Burst in their tumult on the purple brine