That looks like a very good place to set a trap, Olivia thought to herself, pleased. She could imagine labyrinthine hallways, corridors with holes in the roof, many ancient hiding-places and secret passages. Perhaps it would have a population of ravenous predators nesting in the lower levels, or more of the spiders that had made the web she passed earlier. Perhaps it would already have traps, and she would only need to find them without triggering them herself.