The Rattlesnake Disk.  A ceremonial stone palette plowed up by a 19th century farmer in Moundville, Hale County, Alabama, United States.  Housed in the Jones Archaeological Museum at the Moundville Archaeological Park.
<a href="//commons.wikimedia.org/wiki/User:Altairisfar" title="User:Altairisfar">Altairisfar (Jeffrey Reed)</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>