Rabbi Eliezer nods his head. "Yes, even if we could smash the trap door, hook or not the debris would crush whoever opened it. No, smugglers are charlatans and thieves, meaning they're cowards, too. I doubt they built this otherwise sturdy looking masonried underground without a 'back door' from which to escape.
"Celiss, you still have your magic armor on? ........ Good. You're tough and protected, and have a nice light source in your hand. Take point. Darrius, you're next for fire support with your spittle. I'll take third for back-line healing support, and a hopefully-unneeded warhammer. Korian, you take rear guard with your senses; your claws aren't nearly as sharp as your senses. Let's move out."
It's kind of interesting how the mild-mannered rabbi has risen to the occasion of tactican and party leader. But you can muse on that later. Now it's time to find a way out of this place.
The turn to the right is 15' long total, then a turn to the left for 25', and a turn to the right for 10' total. There is a door.
The rabbi and Korian, due to room, will be around the bend while Darrius checks the door and Celiss is ready to support .... on the very off-chance that there might be anything down here. Owing to the worry about paranoid thieves, the Rabbi feels it best that Darrius check for 'anti-thievery' measures. Darrius has to put his dagger away, and checks the door. Nothing, and no sounds on the other side.
The door opens into a 10' wide passage way that goes left and right; 15' to the left, and 20' to the right (and the 5' in which you are) for a total 40' wide. At each end, in the shadows (or once seen by the Rabbi or Korian, quite easily) is a double-door. As you are all Survival and K: Geography deficient, none of you have your bearings underground. (Remember, the Rabbi is a seacliff dwarf that was raised in the city of Sasserine, not underground like most dwarves.) So, it really comes to a random determination.
Rabbi directs a quick search of anything amiss in the passageway. Darrius leads this, with Korian assisting, and find nothing. Random equals to the right. Nothing at the door, nor heard beyond.
There is a large chamber beyond, 30' right-left and 25' long. There is an additional 5' width on the right side at the further 15' mark. On the same wall as the double-door entrance, there is another door leading out on the far side of this wall. Two pillars in the room. Immediately across from your entrance is another set of double doors. Room checked; nothing.
The Rabbi feels that penetration is better than circular cover. Arguments can be made for or against, but the Rabbi pretty much has the mucho charisma (and negotiation) to firm his leadership. It's not about making the 'right' decision so much as making one at all. You go to the double-doors across the way.
Nothing at the double doors. Once opened, the 10WP beyond goes down 40' before going 45-degrees forward to the right. However, 20' beyond is another set of double-doors on the right wall. Rabbi does want to check side passages on the route forward.
Nothing at the doors. Opened, there is a large chamber beyond, with lots of little side alcoves at various points. The core of the room is 20' x 20'. Room checked. Nothing.
Back out to the P-way. At the 45-d turn to the right, it goes down another 25' before correcting 45-d again to the left and slopes downwards some. Once down there, you see a 20' x 25' chamber that is flooded (10' alcove to the far end) and four pillars. The entire chamber has water seeping into it, covering the entire floor.
Darrius asked to go in carefully. Rabbi casts light on his shield to help him see if it goes down for some reason. This is more about visibility to escape, rather than stealth. The room doesn't slope like the passageway leading down, and the water has seeped in very slowly from long-term weeping at the walls.
Now, to further identify all of these eastern chambers you've explored. These were once some sort of barracks. The 'nothing' is more about items of interest. There is a barrel of drinkable (nasty-tasting) water, a few torches, flint & steel, some rotted rope, and the like. Nothing worth keeping or selling. All these doors were ajar.
Backtracking to the chamber that had the door way off to the side. Small 5WP zigzagging in tight quarters to an ajar door. Another chamber (as above). Nothing of interest. Door on far side, has 5' square before another door. However, this door is shut.
Behind you, however, is heard a pitiful moaning from several voices. Because of the echoes and stone walls, it is impossible to tell how many there are. Korian says, "Something just came into that bigger chamber behind us!"
R1T20: Darrius, you can't tell how far beyond the last chamber and the p-way before (or into) the larger chamber these sounds come from. What do you do? Korian, with the Rabbi, are in 'front' of you (relative to the sound.)