Forever

He opens the door and it's new place.
The door vanishes leaving empty space.
Just four bare walls and not a sound,
till under the floor he hears a pound.

He looks down, then up, and there's a hall.
Faintly in the distance he hears a call.
Down the dark corridor, he takes a look back;
no more room, just a hallway of black.

Further he ventures, awaiting something new
and he finds himself on a lawn under a sky blue.
A peaceful change, then he closes his eyes.
Now an open dust bowl with overcast skies.

He takes a step and blackness surrounds.
A place filled with terror and hollowed out sounds.
He closes his eyes, and opens once more.
The feeling of falling, there's no longer a floor.

He screams, then the falling ceases.
On top of a table are puzzle pieces.
He places a piece in, then to the door.
Into the room he has been in before.

Every second, every day, always he will
be trapped with finding a new space to fill.
Forever it seems he shall unwillingly tread.
What he doesn't know is it's all in his head.

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Note I didn't really display any fear or emotion. I felt it made it more interesting and makes you question more. It's up to you to place emotion...if any.