You fetch the wizard from the barricks. The wizard is cross at you all. Don't come of me again - this is salmer's work. His name is Joehiem LighteningRock. He is flanked by 2 serious looking dwarves in plate armor. One with a battle axe, and one with a hammer.
The wizard pushes you out of the way and drops a lighted rock down the original chimney, grimmacing when he sees it full of all sizes of spiders. He grunts and throws a fireball down the tunnel with little more then a flick of his fingers. The eruption sends a sickening smell out of the top. Even a flaming spider or two crawls out of the top before it dies in a squeal. After the acrid smoke clears he drops a lighted stone down the second chimney. "There isn't anything moving down this one.. looks like a nest. I'm not wasting another combat spell on what amounts to work for a chimney sweep. "