The Networked conversation takes an oddly philosophical tone, as they mull over the possibility of being sacrifices to ancient mice gods, the nature of giant tunnel mice, and the loneliness of dreaming of being alone.

By the time the conversation resolves itself, Russell has time to calm down a little and notice a couple things. Such as: whatever gigantic mouse-like creature is forming the wall of this tunnel is, as evidenced by blocking the tunnel, too large to fit in it. So, if he retreats, it probably can't give chase.

With that steadying his backbone, and the thought that maybe it's just lonely and trapped pushing him forward, Russell clears his throat and knocks on the stone near the furry wall.