Mara started loping down the center passage. Kendra was glad they were jogging. The exertion helped drive away the chill. They reached a T, and Mara went left. Then they reached three dead ends in a row without turning before arriving at a small room where the corridor branched in five directions. Mara picked a corridor without pause.
Kendra was happy that all she had to do was follow. She could not imagine how Mara could keep her bearings through these twisting, cramped passageways. The sameness of the smooth walls and floors and ceiling made it almost impossible to distinguish one tortuous corridor from another. As time went on, they continued to reach dead ends and intersections. Every now and then Mara would call back that they were in a hall they had traveled before, or at an intersection they had previously visited. Most of the time, Kendra had no idea whether Mara was correct.
Eventually, despite how the pace of the jog had flagged somewhat, and even though she was used to regular exercise, Kendra found herself out of breath. She did not want to be the weak link who begged for a slowdown. But from the way the others were panting, she judged she was not the only person running out of gas.
It was Tanu who finally called for a walk. Nobody complained. Kendra's clothes were now damp from sweat as well as from water. They walked for several minutes before attempting another jog. They hurried back and forth between dead ends, reaching intersections now and again. Trask, Berrigan, and Elise added comments as they recognized features in the passages or positions of the intersections, always deferring to Mara.
At length, Trask called a break to eat. Kendra sat beside Seth, munching a partly squished sandwich, her back to the cool wall. She wondered how much faster they would move if they could hear their enemies coming.
"The scary thing in here," Seth said around a mouthful of food, "is that we could lose ground with a wrong turn and run right into the zombies."
"We must be ready for that," Trask said. "Let's hope Laura managed to slow them."
"Outside the sun is about to set," Mara noted.
"Then we'll have the wizard joining the chase," Berrigan reminded them.
"Do you think we're getting close?" Kendra asked Mara.
"Where the end may lie is hard to judge just yet," she replied. "We've eliminated several routes as dead ends or pointless loops. Time will tell."
"Time is what we lack," Elise grumbled.
"We'll press on as if our lives depended on it," Trask said, "because they do. And countless other lives as well."
"You're a good leader," Seth said pensively. "How do you prepare for an adventure like this?"
Trask huffed. "You can't fully prepare. You do your best to acquire diverse skills. You try to learn from your successes and mistakes over the years. You try to assemble a team with varied talents and expertise. Mostly, you strive to stay calm enough to think clearly even under extreme pressure. You try to use the adrenaline for focus rather than panic. You stay on your toes, ready to improvise. And you hope for the best."
They ate in silence until Trask told them it was time to move on. Again Mara jogged in the lead, and again they trotted and walked down endless passages, reversing at numberless dead ends. Mara became increasingly frustrated as it seemed she recognized nearly every intersection they reached.
Finally, when the latest corridor had led them to an intersection that forked in three directions, Mara brought them to an exasperated halt. Kendra had trouble recognizing most intersections, but she remembered this one.
"Maybe I was wrong to lead us," Mara apologized. "By my reckoning, all three of these halls will take us into networks of loops and dead ends that will eventually lead us back here. I must have missed something. I don't know how to go forward."
Kendra had never seen Mara this unsettled. An idea occurred to her. "Mara, maybe we have to treat this intersection like a dead end and go back down the passage that brought us here."
Squinting her eyes shut, Mara rubbed her knuckles against her forehead, a grin spreading across her face. "Of course, of course, that has to be it. I've only experimented with doubling back from dead ends, never at intersections."
"Good thinking, Kendra," Trask acknowledged.
"I was about to say the same thing," Seth complained.
Mara led them back the way they had just come, and they reached an area where the tunnel forked in two directions, one slanting up, the other down. "This is new," Mara said with renewed vigor. "Follow me."
They continued onward, running and walking, seldom pausing, passing some of the same intersections several times. From time to time, Mara had them double back without reaching a dead end. Kendra felt her eyes growing heavy. Her legs felt leaden. When she jogged, her muscles burned. Only fear about their urgent mission kept her from curling up on the floor to fall asleep.
When they next halted to eat and drink, Kendra guzzled water, then slumped against the wall to rest her eyes. Tanu had to wake her when it was time to proceed. He hoisted her to her feet, apologizing.
"It isn't your fault," Kendra said, slapping her cheeks to make herself more alert.
Not long after that, Mara started loping forward with greater vigor, claiming she could sense a change in the air. Kendra struggled to keep up. Tanu ran beside her, one supportive hand against the small of her back.
Kendra tried to let Mara's hope become contagious. Could this be the end of the unrelenting labyrinth? Might they actually escape before collapsing from exhaustion? After a final intersection and a few dead ends, the passage opened into the largest room they had encountered so far.
"Well done," Trask enthused, clapping Mara on the back.
"We're in the belly of the Dreamstone," Mara said. "The hollow center."
The vast, empty space of the rectangular room had dimensions proportional to the Dreamstone itself. Polished expanses of dark obsidian formed the floor, walls, and ceiling, illuminated by the same mysterious light prevalent throughout the convoluted passageways. Three strange devices patrolled the far side of the otherwise vacant room: two mechanical bulls and one mechanical lion.
Composed of overlapping iron plates, the elephant-sized bulls tossed their heads as they rolled around the floor on four wheels, their metal legs dangling decoratively. The artfully rendered bronze lion, slightly larger than the bulls, prowled about on huge paws, moving with a sinuous grace inconsistent with its clockwork appearance.
"Are these the guardians of the artifact?" Seth wondered.
"I hope so," Elise said. "I've had my fill of this place."