As you reach to knock on the door, it swings forward to allow you entrance. The golden letters continue to hover before you, though they shift and blur, reforming to say "Up or down?".
You can see a stairway that's following the right hand wall leading upwards. To the left there's a small window looking out into the clearing.. one that you don't recall seeing from the outside.
In the center of the room is a suspicious looking series of markings in a wide circle on the floor. The circle is large enough to stand in.
What do you do?