This piece is one of three renditions of the ritual symbol for Baron Samedi, the Voodoo Lord of the Cemeteries and Spirit of Death. You can see another version at Voodoo-Doll-A-Day.com. The differences between the two are quite subtle but effective.
Voodoo-Doll-a-Day.com is where you can find one new drawing, painting, Voodoodle or photograph, of a Voodoo doll each day. Go ahead and take a look, you know you want to.