The group moved cautiously down the stairs, the metal stairs descending along the outer edge of a partially buried metal structure here. A door allows access into the structure from a landing below, while brilliant lights cast illumination out to the south, into a large, damp cave. Far below, a pool of foul green fluid bubbles and smokes. (S1)<br/><br/>"What<em>si</em>this thing," Johanna asked, looking around, warily. "It's... an enormous structure, buried here."