Double-headed serpent

The Double-headed serpent is a sculpture made by the Aztecs in the 15th or 16th century. It can be found in the British Museum. 
Appearance.
The "Double-headed serpent" looks like two wavy snakes acting as the other's tail. Both of the snakes' faces have one hole for an eye and a mouth filled with white fangs. It is made of turquoise chips of stone and has a wooden block for its base.