A few years ago, I requested a catalog from Epilog laser. Inside, as a demo of what their tool could do, was a small, wooden, laser-etched Mayan calendar.
I immediately put it in my bits box.
I recently glued it to a 2" wooden base and I used some flexible modeling paste to make it look like stone.
Here's the result --
|Three wizards contemplate the ancient writings...
|"Maybe if I touch it with my chaos staff?!?"
The detail is AMAZING.