It was a living, moving carpet. It was, in fact, the Mouse Army. All of 
the other buildings, places, and creatures Princess Nell had seen in the Land 
Beyond had been figments produced by Wizard 0.2; but apparently the mice were 
an exception and existed independently of King Coyote's machinations. When the 
Land Beyond had disappeared, all of the obstructions and impedimenta that had 
kept the Mouse Army away from Princess Nell had disappeared with it, and in 
short order they had been able to fix her whereabouts and to converge upon 
their long-sought Queen.