What about "we can't find the door, and it's hopelessly locked from the outside" didn't you understand?

And I'm not planning on doing some idiotic rescue attempt. But we don't know how long you're going to be stuck there, and I seriously doubt you all have food, water and medical supplies to survive in that environment for more than a few days, and that's without even predicting there's some zombies or something hanging out waiting to chew on you.