But before Jon could do anything something began to come out of the bottom portal. "What?" he said. "I just activated it. We're supposed to go through it."
"Silly," replied Karyn. "If you make a dimensional portal and it goes to another dimension where there has to already be one active, that means someone must have wished for one in another dimension. Or at least built one. So someone else could equally well be coming from another dimension to here."
There seemed to be two people there, but they had their hands over the edge as if they were climbing out some kind of well. Jon realized that although he put one of the portals ten feet in the air, he failed to leave any way to come up through the portal. In order to use it you'd need a ladder or something or you couldn't reach it. But eventually the two people came out and Jon could see...
