Larry
She turns left and begins walking along the wall. It doesn't take her more then six feet to come upon what looks to be a large shelf. This time it's stacked with large crates, seemingly full of a variety of different materials. One has mason jars full of this cyan goo which glows when the light from the arrow brushes past it. This glowing helps better illuminate the area - for the most part the shelves are just stacked with metal, which is strange since there doesn't seem to be a black smithery down here... Regardless nothing else is revealed from exploring the shelves besides what were likely top of the line alchemical ingredients back in the day - many of which seem to have degraded into uselessness. 

Walking further along the wall she loops back to the entrance area and begins to walk down the right half of the wall. This part of the wall is mostly barren save for what seems to be the only wooden door in the entire building. The door has a handle, which appears to have a key in it. The wood work is still in good condition, but she could probably break through it if she really put her mind to it. Likewise it's plausible the key she still has may work on this lock too, if it is indeed locked.
Marc
*Upon seeing the jar with a cyan glow to it, she would decide to wait for her arrow to go out and put it away. Juna would stand up on her tip toes in an attempt to reach the jar and take it with her before continuing down with a new source of light.

Moving on, she would come to notice the door and with a flare of excitement she'd head over towards it. The Canifor would try the handle first to see if it would open. If not, she would at least give the key a try first, turning it in the lock before trying to think of another solution. Her Jackal would come up beside her, soon sitting down at her feet in waiting.*
Larry
She manages to easily reach the jars grabbing one of them. It radiates warmth, pleasant warmth - not unlike a hearth with some roaring logs. The glow it produces casts a much larger area of effect then the makeshift arrow torch she was using prior. Turning the handle reveals that the door is indeed unlocked. Within is a smallish room. The room is occupied mostly with a strange device - a large bronze sphere connected through the center with a metal rod. At the top of the rod are two pipes sticking out the sides with the exhausts facing opposite sides. Beneath the sphere is what looks to be a fire pit. Next to the device is a rather large coal box full of black coals, on the wall next to the door is some kind of strange device with several switches and a large red button. Text beneath the button reads "Start/stop", and underneath the two largest switches is "Light" And "Entrance."
Marc
*Juna would hug the jar close to her, taking in the warmth it gave off while she progressed onward. Upon opening the door, Juna would slowly peek inside before fully walking in and exploring the room for any potential ways she could find to get out. Her gaze would turn to the wall with the strange device on it as she would find herself half-consciously reading what the text said.*"Start... Stop... Light... Entrance... Hm..."*Juna would reach forwards to grab the lever labeled 'light', deciding to pull down on it and see what it would do.*