Rilian explained that there were quite a lot of outlets by which one could get to the surface.he had been taken out through most of them at one time or another. But he had never gone out alone， only with the Witch； and he had always reached these outlets by going in a ship across the Sunless Sea. What the Earthmen would say if he went down to the harbour without the Witch， and with four strangers， and simply ordered a ship， no one could guess. But most likely they would ask awkward questions. On the other hand the new outlet， the one for the invasion of Overworld， was on this side of the sea， and only a few miles away. The Prince knew that it was nearly finished； only a few feet of earth divided the diggings from the outer air. It was even possible that it had now been quite finished. Perhaps the Witch had come back to tell him this and to start the attack. Even if it was not， they could probably dig themselves out by that route in a few hours.if they could only get there without being stopped， and if only they found the diggings unguarded. But those were the difficulties.
“If you ask me.” began Puddleglum， when Scrubb interrupted.
“I say，” he asked， “what’s that noise？”