(That's fine with me for potions)

Tyris heads back down the stairs to the main room and moves to inspect the hanging gear.

Oreus make an Knowledge Religion check. 

Tyris make an Arcana check. 

Arcana: 15

Tyris believes that the light emitting from the hanging gear is a Continual Flame spell

Knowledge religion check 20

Oreus decides after looking closer at the room that it isn't a temple, but some kind of work area as there are desks scattered around the area, and a few boxes and crates fill various corners and nooks. It might be some sort of assembly (where things get assembled) room.

 Alben looks up at the grell's nest, inspecting it from a distance, going to the opposite ledge if necessary to get a better angle, to see if the grell had anything else useful up there from previous victims. Perception:14

(also, how far is it off the ground?)

Oreus looks inside the crates and desks

Maybe there are some hints left here

Alben doesn't see anything of interest in the grell's nest which is 20 feet above the balcony floor. 

Oreus finds lots of powders, little trinkets, and books with arcane lore. (Make an arcana check)

Oreus is not very experienced in Arcana's art so he tells the others:

"Anyone wants to have a look at these books?

In the meanwhile he tries to see if he can recognize something out of it (Arcana check 21) 

(Great roll, Oreus)

Oreus discerns that the books are talking about crafting Wonderous Items, and the powders and other things he found are the raw materials you would need to make such items. 

Oreus refers that to the others 

Cool hang onto that stuff, either we can make something cool or sell that stuff for lots of money.  

I will start looking at the walls for hidden passages 

14

Alben will join Teechu in checking the walls: perception: 15

Books signed in common loot

Shadow and Alben spend a long time searching for hidden doors, but don't find anything besides the two gears doors in the alcove with the hanging gear and the two blocked off hallways. 

What is Laladak and Tyris doing?

Laladak is standing guard, waiting for something to pop off. 

Tyris also stands guard while the others search

Quote from Flyingmatthew >>

Shadow finds the doors locked, but he is able to figure out how to unlock them with ease. He doesn't find any traps so he pushes open the double doors to reveal...

This enormous chamber has a ceiling that soars to a height of forty-five feet at its peak. Two great marble pillars support wooden balconies fifteen feet above the chamber’s west and east wings. Two iron-wrought spiral staircases – located in the southeast and southwest corners – connect the balconies to the ground floor. The furnishings on the ground level suggest some sort of assembly area. Desks occupy much of the area, although a few boxes and crates fill various corners and nooks. An eight-foot-diameter wooden gear hangs from the ceiling at the north end of the chamber, suspended by a pair of great iron chains. A bright light burns in the hollow center of the huge gear, illuminating a large mosaic of interconnected gears painstakingly painted on the ceiling and walls of the room. The singular light casts many shadows throughout the chamber, and the faint sound of clattering gears resonates from somewhere not too far away.

This is a cross section of the room seen from your position 

Here is the updated map 

What are you going to do? Split up and each check an area or explore as a group?

  I wanted to repost the maps so I could find them easier

”well I don’t see any hidden ways out and the exits here aren’t the key types.  Should we go west or east? I say we try east.”