As you step into the room you notice the floor is lava.  A spike of panic lances through you before you realize that it is the only thing you're experiencing. 

It doesn't hurt. Your foot resting gently on oozing lava is perfectly fine. 

You suppose that makes sense. If it were actually red hot, your skin would have been blistered from your bones long before you set foot onto it. 

You can't help but feel weirdly disappointed, however. The room isn't even warm.