The furnace has a thick exhaust pipe on its right side that goes out and then straight up into the ceiling. The pipe has a grate on it, and a thin wisp of smoke trails out of it (completely disproportionate to the blaze in the main furnace). The furnace itself does indeed have a door on it, which is currently open. Inside is a shelf made from the same black stone as the tall heat shields.
Keldar digs through the stuff. It's mostly an assortment of metal arms, legs, heads, and torsos, or some (oftentimes strange) combination of all those things. It looks as though Thyrin was experimenting with golem constructs and giving them different types of appendages. Some have claws, some have crude, hand-like-things, some have awl-shaped points. Keldar, being of a curious nature, fiddles with the arms and discovers that he can clumsily manipulate the fingers by pulling on levers at the base. A few of the constructions have many eye-like objects, some on extendable stalks. All are gnome sized, and the ugliest ones are cast aside in piles. Beneath one such pile, Keldar finds a stone dais, much like the one downstairs. A rock is growing slowly on the dais, it's molding its shape around the various obstructions piled on top of it.
Tarag examines the furnace closely, and discovers a little door in the back leg. It's way too hot to touch with bare hands, though.
[sblock=Tommy: ]As Tarag pokes around the forge, you take a glance into the furnace. Inside is a large ball of fire, about 5' in diameter, hovering behind the black stone shelf. Tommy is reasonably sure that this is a flaming sphere, though he's never heard of such a thing being made permanent like this. He imagines that the furnace is similar to the other devices in this tower. Some brimstone and dried tallow are in the furnace somewhere, and the easiest way to disable the furnace would be to remove those components.[/sblock]
[sblock=Tarag's Detect Magic: ]Tarag's sight suddenly becomes filled with blue. He quickly sorts out the visual stimuli and determines the strongest magical effects nearby. A faint evocation radiates from the furnace, focused on the back left leg but emanating up into the furnace and forming a ball. A faint abjuration emanates from upstairs, but encompasses the entire tower. A faint conjuration also emanates from three places: inside the furnace, the furnace exhaust grate, and the dais just excavated by Keldar.[/SBLOCK]
