Before they went to sleep they carefully barred the door from Rinkitink's room to the corridor, but the doors that connected the three rooms one with another were left wide open.
In the night Inga was awakened by a soft grating sound that filled him with anxiety because he could not account for it. It was dark in his room, the light having disappeared as soon as he got into bed, but he managed to feel his way to the door that led to Rinkitink's room and found it tightly closed and immovable. Then he made his way to the opposite door, leading to Bilbil's room, to discover that also had been closed and fastened.
The boy had a curious sensation that all of his room -- the walls, floor and ceiling -- was slowly whirling as if on a pivot, and it was such an uncomfortable feeling that he got into bed again, not knowing what else to do. And as the grating noise had ceased and the room now seemed stationary, he soon fell asleep again.
When the boy wakened, after many hours, he found the room again light. So he dressed himself and discovered that a small table, containing a breakfast that was smoking hot, had suddenly appeared in the center of his room. He tried the two doors, but finding that he could not open them he ate some breakfast, thoughtfully wondering who had locked him in and why he had been made a prisoner. Then he again went to the door which he thought led to Rinkitink's chamber and to his surprise the latch lifted easily and the door swung open.
Before him was a rude corridor hewn in the rock and dimly lighted. It did not look inviting, so Inga closed the door, puzzled to know what had become of Rinkitink's room and the King, and went to the opposite door. Opening this, he found a solid wall of rock confronting him, which effectually prevented his escape in that direction.
The boy now realized that King Kaliko had tricked him, and while professing to receive him as a guest had plotted to separate him from his comrades. One way had been left, however, by which he might escape and he decided to see where it led to.
So, going to the first door, he opened it and ventured slowly into the dimly lighted corridor. When he had advanced a few steps he heard the door of his room slam shut behind him. He ran back at once, but the door of rock fitted so closely into the wall that he found it impossible to open it again. That did not matter so much, however, for the room was a prison and the only way of escape seemed ahead of him.
Along the corridor he crept until, turning a corner, he found himself in a large domed cavern that was empty and deserted. Here also was a dim light that permitted him to see another corridor at the opposite side; so he crossed the rocky floor of the cavern and entered a second corridor. This one twisted and turned in every direction but was not very long, so soon the boy reached a second cavern, not so large as the first. This he found vacant also, but it had another corridor leading out of it, so Inga entered that. It was straight and short and beyond was a third cavern, which differed little from the others except that it had a strong iron grating at one side of it.
All three of these caverns had been roughly hewn from the rock and it seemed they had never been put to use, as had all the other caverns of the nomes he had visited. Standing in the third cavern, Inga saw what he thought was still another corridor at its farther side, so he walked toward it. This opening was dark, and that fact, and the solemn silence all around him, made him hesitate for a while to enter it. Upon reflection, however, he realized that unless he explored the place to the very end he could not hope to escape from it, so he boldly entered the dark corridor and felt his way cautiously as he moved forward.
Scarcely had he taken two paces when a crash resounded back of him and a heavy sheet of steel closed the opening into the cavern from which he had just come. He paused a moment, but it still seemed best to proceed, and as Inga advanced in the dark, holding his hands outstretched before him to feel his way, handcuffs fell upon his wrists and locked themselves with a sharp click, and an instant later he found he was chained to a stout iron post set firmly in the rock floor.