There is a woman her name is Satoko.
She has an ability seeing through things.
She said as follows for this engraved figure.

relief in Palenque パレンケ ロケット 蓋

"This engraving is correct to see by vertical orientation not sideways.
so you may figure out that for upper section leans to the right slightly,
but bottom part is just even right?
Such a skillful creator must not do this, it might not be happened the figure tilted while his work.

Although a lot of decorations around it, but this image expresses a pair of balances.
you can see the center pole is just like a symbolic cross can't ya?
even at that time, cross has special meaning in it I suppose.
so, this picture means 'JUDGEMENT OF GOOD AND EVIL'.
as you thought, person who settled in the center is the king of this tomb's master.

This king was judged by the balance.
He is in the pot on stove.
The sentence leads overflowing water and extinguish the fire.
Ornaments on both sides depict overflowing water and steam.

and faces are set in both terminals of top bar mean head-of-good-and-evil.
Left one shows evil, right side is good.
You can see that right face is slight down.
This means he was judged as good.
Since the king killed a lot of people, being judged whether his behavior was right or not.
and, I wonder what if creature top above is dragon perhaps?
It seems like this creature going to take him to the sky.

Conclusion is like this;
This engraving indicates that
the king was judged about his deed with balance and stove.
Although he suffered agony in the heat, as a result, he saved him by overflowing water and extinguished the fire.
then, he'll be led to heaven by dragon.
This sleeping man who is just an unfeigned person."


https://goo.gl/3yRJwF(Japanese: to see this page use translation services)