His looked aghast, his eyes wide. "Some summer!"

"It'll be fun. Roland will be"-she dare not say 'baby-sitting,' or Jason would never forgive her-"watching you. He'll be staying here while I'm gone. I expect you to mind him."

He scrunched up his face, irate.

"If you mind your manners and do your homework… without sulking… there are some surprises in store for you."

"Yeah," he said, his voice thick with skepticism. "Like what?"

"First, I found a martial arts expert on the base who can continue your lessons here. If you want to get your yellow belt by year's end, you're gonna need to practice while I'm gone."

The black cloud over his face lifted just a bit.

"Plus, they have electric bikes and Jet Skis to ride."

Jason grimaced. "Why electric?"

"To help protect the ecosystem they limit the number of combustion engines down here. It's the military's small contribution to cavern preservation." Ashley remembered Ben's scowl as they traveled across the base, grumbling the entire way about the blatant abuse of the fragile ecology. Still, Jason's pout drew back her attention. She brushed some loose strands of hair away from her face. "But, Jason, that's not all they have planned. There's also fishing, basketball, you name it. Plenty to keep you entertained while I'm gone. And if you do well with your studies, Dr. Blakely has promised you can join him in the control room and help monitor our progress. You'll even be able to talk to me."

"Well, I guess that's okay," Jason said, still pouting a bit.

"Finally," she said, pointing back into the main room of the suite, "they have cable. A hundred and fifty channels, all decoded."

"Wow, I gotta check that out."

She caught him by the sleeve as he barreled past her. "Whoa, there, sonny. First, we have dinner in a half hour. Go get yourself cleaned up."

"Geez, Mom. Can't a guy have a little fun?" He stomped toward the bathroom.

She grinned. Just like home. Only two miles below the bottom of the earth's surface.

"So what do you think, kid?" Ben asked as he approached Linda's back.

She stood at the edge of the lake, nicknamed the "Bottomless Pit" by the grunts. Only a foot away, black water lapped at a rock from the waves created by a passing Navy pontoon boat.

He scratched at the stubble on his cheek.

She glanced over at him, the light of the camp dancing in her eyes. "It's wondrous." She pointed at the ceiling several hundred feet up. "It's like being outside."

He nodded, then shrugged in the direction of the water. "Thinkin' of skinny-dipping?"

She smiled. "No, but you could."

"Oh, no, you'd snatch up my skivvies and have the whole base laughing at me."

She grinned wider, more relaxed. "That's not what I meant. I meant you could actually swim in there. I've heard that some of the Marines do it. The water is quite warm. Eighty-two degrees. I tested it. Heated by volcanic vents."

"Seems strange," Ben said. "Up above, it's ice and freezing winds. Here, it's bathwater and tropical breezes."

"Not really so strange. I've heard that the seas around Deception Island off the coast of Antarctica sometimes heat to spa temperatures. The volcanic activity is so pronounced that often the water actually boils. Just meters away from a glacier."

"Uh-huh," he said, arching his eyebrows as if he doubted her.

She nudged him with her elbow. "It's true."

He smiled. "Actually, I believe you. I've been in other caverns warmed by subterranean rifts. Not really that rare. I was just testing you."

"Yeah, right," she said, rolling her eyes.

A glowing amber fish jumped a yard from shore, causing Linda to let out a quick gasp. Ben's eyebrows narrowed. "Listen, lass, there's something I want to talk to you about."

She wiped damp strands of hair from her face. "What?"

"I've been watching you, and I… well, I-"

She held up a hand. "I'm sorry, Ben. I know we went dancing in Buenos Aires, but that was only to let off a little steam. I want to keep this experience purely professional."

Ben grinned, realizing Linda thought he was making a pass at her. From her looks, she must get that a lot. "Whoa, there, lady. That's not why I'm here."

"Why, then?"

"Over the years, I've led bushels of tourists into caves, and… well, I can smell trouble. Since our night out dancing, I've been watching you. Both in that crowded bar and now here among the caves, you've been awfully edgy. Shallow breathing, sweaty palms, pale face." Ben saw her eyes sink to the stone floor with his words. "That's why I came out to talk to you alone. I thought maybe there was something you'd like to get off your chest."

She raised her face to him, her eyes rimmed with tears. "You're right, Ben. I have a problem with tight places."

"Claustrophobia?"

She rubbed at her forehead, eyes down again, and nodded.

"During the trip ahead, there are going to be many tight places. A panicked team member could jeopardize all of us."

"I know. But I'm on medication and have been through years of therapy. I can handle this."

"Even that tango bar in Buenos Aires shook you up."

"Because I didn't take my pills. Didn't think I would need them. The bar with its packed crowd and loud music just caught me off guard. I can handle this mission."

He reached over and held her shoulders. "You're sure?"

She looked at him. "I'll be fine. I can do this."

A fish jumped again. This time the splash failed to startle Linda. She continued to stare Ben straight in the eye.

Silent for several breaths, he weighed her resolve. "Did you pack a fishing pole?" he finally asked.

"Why?"

"You'll need it if you want to collect specimens during this trip."

"Right," she said with a smile. "So you won't mention this to anyone?" She wiped at her eyes.

Ben released her and picked up a flat stone. He skimmed it across the smooth lake surface. "Mention what?"

The more life changes, the more it stays the same, Ashley thought, staring at her plate. Before her, cheese bubbled and white pasta floated in a steaming marinara sauce. Waves of garlic assaulted her nose. Lasagna again. Ashley smiled, remembering the last lasagna dinner, when Blakely first proposed this mission. The food was the same, but not the surroundings. Linen, bone china, crystal chandelier, mahogany dining table. Not her trailer's kitchenette. She speared a forkful of the pasta.

"Professor Carter," Blakely said. "I've arranged a research associate, Dr. Harold Symski, to guide you on a tour of the north wall. He'll be calling on you around eight o'clock tomorrow morning."

With a hand held up, she swallowed her mouthful. "Since I only have the one day, I would rather start earlier. Say around six o'clock."

Blakely smiled. "I'll let Dr. Symski know."

Ben cleared his throat and wiped a dribble of cheese from his chin. "I'd like to go and check them out too."

"Fine with me," Blakely said. "Is that all right with you, Professor Carter?"

Ashley pictured Ben crawling beside her into a cramped cave, his body pressing against hers. "As long as he doesn't get in the way."

He raised his hands in feigned innocence. "Who, me?"

Blakely addressed the rest of the group. "Any others?"

Jason raised a tentative hand. "I'd like to go."

"I don't think that would be wise," Blakely said sternly. "There are many rockfalls and pits in that area. It's safer here."

Jason turned toward Ashley. "But Mom, I-

Linda interrupted. "He can come with me to research the lake. The section I'll be surveying lies within the boundaries of the camp." She turned to the boy. "Would you mind helping me, Jason?"

Ashley looked down at her blushing son. "Is that okay with you, honey?"