Ugh. At least they're preferable to sink sharks. Or shower sharks.

Russell's there for several minutes, scratching words into the wall back at people, before he concludes there's probably people ahead of him down this way, nobody knows for sure what the mice want, and no one's been caved in. It'll have to suffice.

He continues down the tunnel, continuing to survey the tunnel walls with the flashlight going back and forth, looking and listening for signs of anything. Not raising his voice, he calls ahead, "anyone down here? Did the mice come to do something for you...?"