Each of the symbols on the outer circle seem to represent a different god.

You can push the symbols in - we need to push in a few specific gods.

We found the key to unlock this puzzle behind that strange stone tablet - it was added to your inventory, so maybe it'll prove useful again?

Right-click on it in your inventory for a closer look.

Turning the tablet upside down revealed the numbers '5', '12', '1' and '3'. In that order.

There are twelve deities in the circle - we need to figure out which number they correspond to.

Right-click on their symbols to learn more about them.

That would be Praios, represented by an eye with wings.

We're looking at the circle from an awkward perspective, but the Gods are numbered in a clockwise order - Rondra is number two, so see if you can figure out the rest and press them in order.

Boron, Rahja, Praios, Efferd. See the quickhint for a labelled diagram.

Things just keep getting more mysterious - get down there!