However, except for the lighting, the cavern seemed to be like any other subterranean hollow.

Anana jumped through then, her spear in one hand, a blazing torch in the other. She crouched, looking swiftly around.

He said, "So far, so good."

"But not very far."

Though they spoke softly, their words were picked up, inflated, and, like Frisbees, spun back toward them.

Ahead was the cavern, huge as far as they could see. It also extended into darkness on both left and right. He turned to look behind him. The sixsided gate was there, and beyond it was more vast cave. Air moved slowly over him. It cooled off his sweating body and made him shiver. He wished that he had had more time to prepare for this venture. They should have brought along clothes, food, and extra torches.

The Lord who had set this gate up had probably done it thousands of years ago. It might have been used only once or twice and then been neglected until now. The Lord knew where other gates were and where they led. But Kickaha and Anana had no way of knowing what to do next to get out of this world. There was one thing he could do that might work.

He lifted the Horn to his lips and blew the silver notes while his fingers pressed on the seven buttons. When he was finished, he lowered the Horn and thrust the tomahawk head through the gate. The head disappeared.

"The gate's activated on this side!" he cried.

Anana kissed him on his cheek. "Maybe we're getting lucky!"

He withdrew the tomahawk, and he said, "Of course. .."

"Of course?"

"It might admit us back to the world we just left. That'd be the kind of joke a Lord would love."

"Let's have a laugh, too," she said. She leaped through the hexagon and was gone.

Kickaha gave her a few seconds to move out of his way and also to come back through if she had reason to do so. Then he jumped.

He was pleased to find that he was not back in the Whaziss temple. The stone-block platform on which he stood had no visible gate, but it was, of course, there. It was in the center of a round, barn-sized, and stone-walled room with a conical ceiling of some red-painted metal. The floor was smooth stone, and it had no opening for a staircase. There was no furniture. The exits were open arches at each of the four cardinal points of the compass; a strong wind shot through the arch on his left. Through the openings he could see parts of a long, rolling plain and of a forest and of the castlelike building of which this room was a part. The room seemed to be five hundred feet above the ground.

Anana had left the room and was pressed against a waist-high rampart while she looked at the scene. Without turning to look at him, she said, "Kickaha! I don't think we're where we want to be!"

He joined her. The wind lifted up his shoulder-length bronze-red hair and streamed it out to his right. Her long, glossy, and black hair flowed horizontally like octopus ink jets released in a strong sea current. Though the blue but slightly greencast sun was just past the zenith and its rays fell on their bare skin, it was not hot enough to withstand the chill wind. They shivered as they walked around the tower room. Kickaha did not think the shivering was caused only by the wind.

It was not the absence of people. He had seen many deserted castles and cities. Actually, this castle was so tall and broad that it could be classified as a large town.

"You feel uneasy?" he said. "As if there's something unusually strange about this place?"

"Definitely!"

"Do you feel as if somebody's watching you?"

"No," Anana said. "I feel ... you'll think I'm being irrational ... that something is sleeping here and that it'll be best not to wake it."

"You may be irrational, but that doesn't mean you're crazy. You've lived so long and seen so much that you notice subtleties I can't. .."

He stopped. They had walked far enough that he could see part of the view from the other side. Past the roofs of many structures, up against a hill of rock, was a round, bright blue structure. He resumed walking around the tower until he could see all of it. Then he stopped and gazed a while before speaking.

"That globe must be four or five miles from here. But it still looks huge!"

"There are statues around it, but I can't see the details," Anana said.

They decided that they would walk through the castle-city to the enormous globe. But the room had no staircase. They seemed to be imprisoned in the top room of the tallest tower in the castle. How had the former citizens gotten to this room? They busied themselves intently going over every inch of the inside and outside of the tower room. They could find no concealed door, no suspicious hollow spaces, nor anything to indicate a secret exit or entrance.

"You know what that means?" Kickaha said. Anana nodded and said, "Test it."

He went to the side of the invisible hexagon opposite that from which they had stepped out. He lifted the Horn and blew the seven notes. Nothing visible happened, but when he thrust his tomahawk through the space where the hexagon must be, the weapon disappeared up to his hand. As they had suspected, each side was a gate.

"It's probably part of a gate maze," she said.

He leaped through the hexagon, landed on both feet, and stepped forward. Two seconds later, Anana followed. They were in a large, doorless, and windowless room made of a greenish, semitransparent and hard substance. The room could have been carved out of a single huge jewel. The only light came from outside it. It showed unmoving objects too dim to be seen clearly. Against the wall opposite him was the outline of a hexagon in thin black lines. Unless a trick was being played upon them, the lines enclosed a gate.

The air was heavy, thick, stale, and unmoving. Near his feet were two skeletons, one human and one semihuman. In the midst of the bones were two belt buckles, golden rings set with jewels, and one beamer. Kickaha leaned over and picked up the pistollike beamer. That made him breathe deeper than he should have. The lack of oxygen was making his heart beat overfast, and his throat was beginning to tighten.

"I think," Anana said, "that we don't have much time to spend trying to get through the gate. Our predecessors didn't have the code, and so they died quickly."

Theoretically, the two previous occupants of the room should have used up all the oxygen in it. But there was enough here to keep the two from beginning to strangle at once. Obviously, the owner of the gate had brought in some oxygen to replace what the dead intruders had used. Just enough to torture the next occupants with the knowledge of their sure fate.

"We've got maybe a minute!" Kickaha said.

He pressed the button on the beamer that indicated the amount of energy left in the fuel supply. A tiny digital display by the button showed that enough fuel was left for ten half-second full-power bursts. After shoving the barrel of the beamer between his waist and his belt, he put the mouthpiece of the Horn to his lips. It was not necessary to blow hard. The output of the seven notes was at the same noise level, regardless of the input.

As the last silvery note bounced around in the small room, Anana thrust the head of her spear into the area of wall on which the lines were painted. It disappeared. Then she withdrew it. It showed no signs of damage or fire. That did not mean much, as both knew. Nevertheless, by now Kickaha's lungs were sending signals to him, and his throat seemed to be falling in on itself. Anana's face showed that she, too, was feeling panic.

Despite his increasing need for fresh air, he turned around and blew the seven-note sequence again, directing it at the blank wall opposite the inscribed one. It was possible that there was a gate there also, one its maker had hidden there. The gate with the hexagon might be a deadly trap for the uncautious.