Alpheus

Alpheus (Rom. Alpheus), a river of Peloponnesus famed in classic song. Rising in Arcadia, and passing through Elis and Achaia, it falls into the Ionian Sea; but as part of its course is subterranean, strange legends and myths attached themselves to this phenomenon. The stream was personified as:

"Divine Alpheus, who by secret sluice Stole under seas to meet his Arethuse." Milton, Arcades, 80,