But his question was answered an hour later when Kathree, then the rest of them, discerned a whine and a rumble coming from the direction of the water. Running lights appeared over the horizon, coming from the south over the limit of the world, but then winked out as the pilot made the decision to run dark. It was clear from the sound, and from the way it hugged the water, that this thing was neither an airplane nor a ship but the in-between thing known as an ark. They heard it sough into the water a kilometer away and switch over to the chugging engines it used to maneuver on the surface. It dropped anchor several hundred meters offshore: well away from the land, so as to respect the hair-trigger sensibilities of the Diggers, but close enough that people and gear could be ferried to and fro on small boats. It opened its big rear cargo ramp, allowing the sea to flood its interior and float a collection of small boats and barges that had been packed aboard. On one of these, a small party came ashore. Kathree heard them conversing, mostly with Ty and Arjun, though Einstein as usual found a way to make himself part of the action.