Somewhere around midday, when passing through the center of the city square, Zaphod Beeblebrox will find the ground rumbles under his feet. It's not unlike the quake that brought him here. Before he can spring aside, a chasm opens under his feet. He falls into darkness -- but not far. About ten feet down he hits solid ground, and finds himself in some kind of large, dark area. Daylight shines in through the crack above, but not enough to illuminate his surroundings. What does he do?