Cadmus was a Phoenician prince who founded the city of Thebes, following instructions he received from the Oracle at Delphi. In today's image, you see one of the tasks that Cadmus had to accomplish in the process of founding his city: there was a water-dragon that guarded the Castalian Spring near Delphi, and Cadmus slew the dragon.
You can also find more myths and legends for the week of March 11-17 here. For more information and links to the actual javascript code, see the Myths & Legends Widget Reference Page.
