can't drop the rock

[Черный Папа]

I am in the cave on the quest "missing", found the second part of the mosaic behind the arena with worms and lifted the stone to clear the mosaic. how to put the stone)? I can't find the button on the gamepad how to throw this damn stone on the floor

[Lyle]

Throw it down the shaft. Should be an interaction cog there

[valiant43e]

On top of Lyle's answer : shaft is to the right of the puzzle

[Черный Папа]

found it, thanks guys