Estrucan Gold Achelous Head Pendentive

In Greek mythology, Achelous was the patron deity of the "silver-swirling" Achelous River, which is the largest river of Greece, and thus the chief of all river deities, every river having its own river spirit.  Homer's reference was interpreted as making Achelous "prince of rivers".

Achelous head. Pendentive of an Etruscan gold necklace, ca. 480 BC.