Description of Greece
Pausanias
Pausanias. Pausanias Description of Greece, Volumes 1-4. Jones, W.H.S. (William Henry Samuel), translator; Ormerod, Henry Arderne, translator. London, New York: W. Heinemann, G.P. Putnam's Sons, 1918-1935.
Fifty stades, I conjecture, from Temenium is Nauplia, which at the present day is uninhabited; its founder was Nauplius, reputed to be a son of Poseidon and Amymone. Of the walls, too, ruins still remain and in Nauplia are a sanctuary of Poseidon, harbors, and a spring called Canathus. Here, say the Argives, Hera bathes every year and recovers her maidenhood.
This is one of the sayings told as a holy secret at the mysteries which they celebrate in honor of Hera. The story told by the people in Nauplia about the ass, how by nibbling down the shoots of a vine he caused a more plenteous crop of grapes in the future, and how for this reason they have carved an ass on a rock, because he taught the pruning of vines—all this I pass over as trivial.