Ladon Picture

A picture of the ancient Greek dragon-thing named Ladon. He's the son of Typhon and Ecidna and the brother of the Hydra, Cerburus, and the Sphinx. The truth is, I've never heard of this guy until recently, and I'm the Greek mythology guy. In fact, nobody I know has ever heard of this. Even says, "I dunno'." Who the hades is this guy? And where does he fit into the mythos?
2008 Stage Two Art Major
Demeter's Mourning
Persephone_Greek Myth