As you are horrified by the painting, you look at the gateway. Something tells you that bad things are going to happen when you step trough there.
You notice that the cave floor here is covered in a fine white dust. You can't tell what exactly that is though. Suddenly you hear a scream! It must
be your friend, you don't want to go trough the gate but you know you must. You can also feel the darkness getting thicker, almost as it was alive.
You also notice that the light from your torches has become much more dimmer.

[For better experience]
To experience the story better please change your normal torches for redstone ones in the chest.