Congratulations, you have survived! You may imagine as much struggle with the door as you wish, but ultimately they manage to keep it from closing before everyone is out. Of course some water does run on the path, but that's not too bad (it does freeze, so be careful of slippery surfaces).

The parchment has been secured. There's nothing magical there, it's just paper. What old secrets might it be hiding?

Upon opening the parchment there's just one word:

"idiot(s)"

Well then.

What next? Will they try the other route next, brave the pit or go back up (somehow)?