This is the side of an Ancient Egyptian sarcophagi. Date unknown.
<a href="//commons.wikimedia.org/wiki/User:Ashershow1" title="User:Ashershow1">Aryeh Shershow</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span> <a href="//commons.wikimedia.org/wiki/User:Ashershow1" title="User:Ashershow1">Aryeh Shershow</a>