Sarah and Katie find Arthur and hear his story.
"They followed Arthur into an enormous room. The floor was covered in a thick, green carpet that looked just like grass. The ceiling was so high that it was impossible to see it and puffs of white smoke floated in the air, looking very like clouds. At first they thought that there was no furniture in the room just piles of rubbish, old shopping trolleys, tractor wheels, oil-drums, bones, that sort of thing."