They could have used things like trees, people, animals, mountains, etc as a reference/starting point for their work.
Art made from hardened clay
Giddy Up
A sarcophagus<span> (sarcophagi) is a box-like funeral receptacle for a </span>corpse<span>, most commonly carved in stone, and usually displayed above ground, though it may also be buried.
I hope this helps :)
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