Korree himself had broken some sort of tribal rule or magic and had been chased out of his home. He was a lonely outcast. That was why he had gone with Robin when Robin had given him food. This symbolized acceptance into Robin's tribe. And though Robin looked to him like a very strange sort of man indeed--a solid man, a "rock" man was the way Korree explained Robin's nontransparent flesh and his tremendous strength--Korree had been glad to find acceptance anywhere. Carefully questioning Korree about the surface, Robin found that the Glassie had apparently no conception of what sort of a world the Moon really was. To him it was a place of many enclosed spaces. The surface he had neither seen nor even dreamed of. That there could be a place where the enclosures ended and the world "dropped off" into nothing, this was something he could not imagine. Robin then asked questions about the upward regions. Korree indicated that these were less and less habitable, that his people strove always to go down, never up. Robin twisted his questions around, trying to determine if the Glassies had ever seen anything that might signify the surface. He described the sun and the Earth to Korree but the Glassie seemed unable to understand. But when he spoke of the sun as being a bright glowing thing so bright that it hurt the eyes to look at it, Korree seemed to remember something. Carefully the Glassie told Robin that he had heard of a tribe that lived somewhere in the upper regions, where in one part of their bubble there sometimes came a terrible white-hot light that hurt when one looked upon it. This light was not always there, but shone through the top of the cavern, which Korree explained was like the substance of his arm--that is, semi-transparent. Robin became very excited when he heard this. It sounded to him as if somewhere up near the surface there must be an airtight cleft or bubble whose outer crust might be natural volcanic glass. Through this the sun might sometimes penetrate to produce the phenomenon Korree described. Plainly then, this was the place Robin must find. It looked like the ideal place to begin his projected signaling to Earth. But whether it was or not, Robin would have to make a visit there to see. Korree did not like the idea, but indicated he would be willing to go along. "Could you lead me there?" Robin asked. "Much hard," Korree replied. "Can make do. You-me not like. Many-winter trip, many bubbles." But Robin was determined. "We will go. First I must make a space suit. I may need it." Korree spread out a hand in acceptance.