"Ah well, the layout is quite simple actually. That tunnel over there goes straight down at a fifteen degree angle for roughly eight miles, then it joins a web of tunnels that forms the outer cloister of what was once a city. The spherical object I'm reseraching is halfway imbedded in the ground about a quarter mile in... The winding and twisting sub-paths are too small for most men to get through properly, but those haven't been mapped. I've crawled around in them before, but besides being great hiding spots and useful for getting onto other highways once you get into the web, it's rather simple as I said. Problem, I suppose, is I guess you couldn't tell how many of those mechanations would be dwelling in there, could ya... hrm... I hadn't considered that..."
"Er, to get to the point, I actually havn't been mapping the place, though I do have a pretty good memory of the layout."