To be honest, you've never seen a door before. You've heard of the concept, and if you recall the goblins to the far north have a similar concept with hanging mats over the entryways, but the years where you live are too warm for you to need doors, and you feel no need for any extra privacy besides what the wooden walls give you. Even during the colder times, you swaddle yourself in thicker furs and go on without doors.
You saw the Alien use this one though. It's solid, obviously, but if you twist the knob it should open. Except, when you try to turn the knob it fails to turn.
You stand on the tips of your feet and peer into the crack of the door. With your amazing vision, you have no problem discerning to a basic extent how the lock works, and your mind instinctually knows how to bypass it.
First you'll need something flat and sharp. You figure the beds must be held up by something, and sure enough there are small bits of the shaped stone so unbiquitous to this place holding the planks together. You choose one that you determine to be redundant, and pry it loose by hand. With your new tool, you again place yourself against the door and, with the natural dexterity your kind has always possessed, wriggle the loose bit into the crack of the door. You wedge it firmly and begin to pump it back and forth, cracking to the wood of the door, but also forcing the lock out of position.
With the lock undone, you quietly open the door and peek outside. There's an empty hallway, with three more doors leading out. One is directly next to you, and stands half open. From within, you can see it's some sort of observation room, with a window of clearstone viewing the room you're housed in. There's a bank of flashing lights which you can't begin to understand the purpose of, and a set of small ceramic cylinders. A stray drop of some brownish fluid drips down the side of one. You assume them to be jugs or tankards of a sort.
The other two doors are closed. You doubt they're locked; the aliens probably didn't figure for you breaking free of your room. However, it's not unimaginable they are, and so you tuck your little tool into the side of your belt.
What do?