You turn around and there's… Nothing. Dusty brown rocks all the way to the horizon. A vast sky full of clouds. You look up, squinting. The sky flickers once, you see faint blue lines outlining the top of a dome hidden within the clouds. You frown, looking down. A door appears to shimmer out of thin air.
You try the door, but notice there's a "portal under construction" sign right below the doorknob. You mutter to yourself, something not very nice. You remind yourself to remember to try later, but know you probably won't remember.
You look around, there's a pen on the floor. Maybe if you write your contact info below the sign, they'll send you a message when it's ready. Or send you some sort of letter of news. If you're worthy, at least.