ANOTHER PIERCING SCREAM. IT HAD ALMOST REACHED the cavern.

Ashley searched for any other exit from the nesting area. Even a small crevice in which to hide would do. A hurried scan with her hand lantern revealed only rock.

"Back down!" Ben said, pointing his lantern back to the cliff.

Michaelson already had his sawed-off shotgun in his hand. "No, we stay and kill it."

Ashley shook her head. "Might be others. Gunfire could draw a whole flock of those damned creatures. We only shoot if cornered."

Ben glanced back at the cliff. "I'd say we're cornered."

"We just need somewhere to hide," she said. "If Big Mama finds the cavern empty, hopefully she'll lose interest and go away again."

"But where could we hide?" Michaelson asked. He checked his rifle to make sure the clip was secure.

Ben tugged on the coil of rope over his shoulder. "We could hang over the cliff edge. Wait for it to leave. If it finds us, we can rappel farther down the cliff face."

Ashley's arms still felt like limp noodles, but what choice did they have? "Good idea. Let's go."

Ashley slid down the ridge, following Ben to the cliff's edge. From the ridge, Michaelson guarded their backs, watching the tunnel for Mama's appearance.

"Loop your rope over that stalagmite," Ben instructed. "Like this."

She followed his example, pulling on her knot even more strongly than him. She gave it a third yank.

"That's plenty tight, Ash."

"Just making sure." She watched Ben set up the major's rope on a third outcropping. He threw the coiled rope over the edge, letting it drape down the cliff face.

A bellow of anger thundered through the chamber. She glanced toward the nest.

Michaelson scrambled down the slope toward Ashley, clutching his shotgun in one hand. "Here she comes!"

"Ash! Get going. I'll make sure Michaelson gets hooked up."

She nodded, clipping the rope through the carabiner. "Don't take any chances."

"Who, me?" He winked at her, herding her toward the edge. Another bellow erupted. "Hurry!"

Grasping the rope, she leaned over the edge and hopped down a few yards, then braked to a stop. The cliff's edge blocked her view of Ben as she descended. Damn, she couldn't see what was happening up top, but she could hear.

"Don't wait, Ben! Get your ass over the edge!" Michaelson's voice was near-hysterical. "She's right behind me!"

"Just get your butt over here, mate."

A scattering of loose shale rained over the edge as the major skidded to a halt. "She sees us! Here she comes!"

The sound of claws ripping at rock sent a cataract of tremors up Ashley's back. A deafening scream blasted from above, sounding as if it were coming right from the cliff's edge.

Michaelson suddenly leaped over the precipice, rope zinging through his carabiner. His boots hit the rock yards to her left. His face was beet-red in the glow of her helmet lamp.

"Ben?" she asked, searching the cliff's edge.

Between gasps for air, Michaelson shook his head. "He… he… had turned off his lamp… then bolted behind a boulder fall. I don't think it saw him. Instead it fixed on my light."

She prayed he was safe, eyeing the empty dangling rope to her left. She could hear something snorting just overhead. More shale tumbled down, pelting Michaelson.

A reptilian head shot over the edge of the cliff, searching with one black eye, then the other. It was right above the major. Its scanning halted, one eye pointing toward Michaelson. Opening its jaws, it screamed at him.

Michaelson leaped another yard down, now well beyond the reach of even its long crested neck. The predator hissed at its escaping prey, then cocked its head a final time before snaking back over the edge. Ashley blew suppressed air from her chest as Michaelson gave her a thumbs-up. They were safe. But what about Ben? She searched again. A gasp from the right drew her attention back to Michaelson. He had lost his footing, slamming into the wall as his rope was yanked upward. She watched wide-eyed as his flailing figure was dragged another several feet up. He hit the wall hard with his shoulder.

"Jesus Christ! It's got my rope!" He was hauled farther up, now only two feet from the top.

Again the beast peeked over the edge, eye cocked toward Michaelson, the rope clamped in its jaws. It reared up, dragging Michaelson straight up into the air to dangle from the jaws of the creature.

Ashley tried to loosen her pistol with one hand while gripping the rope with the other. Her fingers struggled with the clasp over the gun. Damn it! She fought the holster, then froze when she heard Ben.

"Hey, there, Big Mama. Is that any way to treat a guest?" He followed his words with a loud whistle.

Ashley watched as the beast twitched in the direction of his voice, swinging Michaelson wildly. The creature opened its mouth to hiss at the new intruder, dropping the rope.

Michaelson plummeted past her, his arms and legs wheeling. The slack in his rope snapped taut. He crashed into the wall. The sound of snapping bone accompanied the collision.

She stared down at him. He groaned, eyes narrowed with pain, as he struggled into a rappelling position, using only one leg. Satisfied that the major had survived the fall, she turned back to the cliff's edge.

The monster had disappeared beyond the horizon of her view. She could hear it snorting and sniffing up there, claws tentatively scratching at rock, searching. C'mon, Ben, get down here. She listened for any further sign of what was going on up there. Silence. She glanced to her left. Ben's rope was gone! When had that disappeared?

A loud snort of glee drew her attention. The hunter had found its prey. A frantic scraping and scrambling erupted.

"Look, Ma!" Ben's voice was savage. "I knitted you a new scarf."

A bellow of rage.

Suddenly Ben leaped over the edge, shooting over empty space, rope trailing. As he reached the end of the slack, he twisted in midair to face the cliff and plunged toward the wall. Using his legs, he absorbed the brunt of the impact. Only an explosive "Oof" indicated that the collision had any effect on him.

"Ben…?" She said, relieved and confused. "What about the-"

Ben pointed up.

She turned her eyes back to the cliff's edge. The marsupial's head dangled over the cliff, its blubbery tongue hanging from its slack jaw. Ben's rope was looped around its neck, digging a trench in its flesh.

Ben pushed a pouted lip at the beast. "Now, how's that for gratitude? I don't think she likes my present."

As the SEAL groaned and opened his eyes, Linda checked his pulse. "He's coming out of it," she said. She had been worried that in his weakened state the fungal spores may have been too strong for him.

"That's good," Khalid said. From his queasy expression, he was still suffering from the aftereffects himself. He closed his eyes and pressed fingers to his temples.

"Here. Try this." She passed him a damp towel. "Lay back and place this over your eyes."

He smiled wanly at her but accepted her offering.

As he lay back, Linda turned to Villanueva. She wiped the SEAL's forehead. With Khalid's help, she had been able to transport him to a relatively fungal-free chamber. A stream of cool water coursed through the cave, slightly tangy with dissolved minerals. The only entrance to this room was a narrow hole, too small for any large predators. Still she kept a pistol resting on a rock within arm's reach.

Villanueva struggled to speak between sticky lips. "W-w-water…"

She helped him sit up and raised a cup to his lips. With shaky hands, he collected the cup and managed himself.

"What happened?" he asked, glancing at Khalid, who now snored quietly from under the wet cloth.

She explained the story of the poisonous fungal spores while he finished his water.