As Paul directed the foam barrier, Jessica dug with her hands, hurling the sand down the slope. "How deep?" she panted.

"About three meters," he said. "And I can only approximate the position. We may have to widen this hole." He moved a step aside, slipping in loose sand.

"Slant your digging backward. Don't go straight down."

Jessica obeyed.

Slowly, the hole went down, reaching a level even with the floor of the basin and still no sign of the pack.

Could I have miscalculated? Paul asked himself. I'm the one that panicked originally and caused this mistake. Has that warped my ability?

He looked at the paracompass. Less than two ounces of the acid infusion remained.

Jessica straightened in the hole, rubbed a foam-stained hand across her cheek. Her eyes met Paul's.

"The upper face," Paul said. "Gently, now." He added another pinch of spice to the container, sent the foam boiling around Jessica's hands as she began cutting a vertical face in the upper slant of the hole. On the second pass, her hands encountered something hard. Slowly, she worked out a length of strap with a plastic buckle.

"Don't move any more of it," Paul said and his voice was almost a whisper.

"We're out of foam."

Jessica held the strap in one hand, looked up at him.

Paul threw the empty paracompass down onto the floor of the basin, said:

"Give me your other hand. Now listen carefully. I'm going to pull you to the side and downhill. Don't let go of that strap. We won't get much more spill from the top. This slope has stabilized itself. All I'm going to aim for is to keep your head free of the sand. Once that hole's filled, we can dig you out and pull up the pack."

"I understand," she said.

"Ready?"

"Ready." She tensed her fingers on the strap.

With one surge, Paul had her half out of the hole, holding her head up as the foam barrier gave way and sand spilled down. When it had subsided, Jessica remained buried to the waist, her left arm and shoulder still under the sand, her chin protected on a fold of Paul's robe. Her shoulder ached from the strain put on it.

"I still have the strap," she said.

Slowly, Paul worked his hand into the sand beside her, found the strap.

"Together," he said. "Steady pressure. We mustn't break it."

More sand spilled down as they worked the pack up. When the strap cleared the surface, Paul stopped, freed his mother from the sand. Together then they pulled the pack downslope and out of its trap.

In a few minutes they stood on the floor of the fissure holding the pack between them.

Paul looked at his mother. Foam stained her face, her robe. Sand was caked to her where the foam had dried. She looked as though she had been a target for balls of wet, green sand.

"You look a mess," he said.

"You're not so pretty yourself," she said.

They started to laugh, then sobered.

"That shouldn't have happened," Paul said. "I was careless."

She shrugged, feeling caked sand fall away from her robe.

"I'll put up the tent," he said. "Better slip off that robe and shake it out." He turned away, taking the pack.

Jessica nodded, suddenly too tired to answer.

"There's anchor holes in the rock," Paul said. "Someone's tented here before."

Why not? she thought as she brushed at her robe. This was a likely place--

deep in rock walls and facing another cliff some four kilometers away--far enough above the desert to avoid worms but close enough for easy access before a crossing.

She turned, seeing that Paul had the tent up, its rib-domed hemisphere blending with the rock walls of the fissure. Paul stepped past her, lifting his binoculars. He adjusted their internal pressure with a quick twist, focused the oil lenses on the other cliff lifting golden tan in morning light across open sand.

Jessica watched as he studied that apocalyptic landscape, his eyes probing into sand rivers and canyons.

"There are growing things over there," he said.

Jessica found the spare binoculars in the pack beside the tent, moved up beside Paul.

"There," he said, holding the binoculars with one hand and pointing with the other.

She looked where he pointed.

"Saguaro," she said. "Scrawny stuff."

"There may be people nearby," Paul said.

"That could be the remains of a botanical testing station," she warned.

"This is pretty far south into the desert," he said. He lowered his binoculars, rubbed beneath his filter baffle, feeling how dry and chapped his lips were, sensing the dusty taste of thirst in his mouth. "This has the feeling of a Fremen place," he said.

"Are we certain the Fremen will be friendly?" she asked.

"Kynes promised their help."

But there's desperation in the people of this desert, she thought. I felt some of it myself today. Desperate people might kill us for our water.

She closed her eyes and, against this wasteland, conjured in her mind a scene from Caladan. There had been a vacation trip once on Caladan--she and the Duke Leto, before Paul's birth. They'd flown over the southern jungles, above the weed-wild shouting leaves and rice paddies of the deltas. And they had seen the ant lines in the greenery--man-gangs carrying their loads on suspensor-buoyed shoulder poles. And in the sea reaches there'd been the white petals of trimaran dhows.

All of it gone.

Jessica opened her eyes to the desert stillness, to the mounting warmth of the day. Restless heat devils were beginning to set the air aquiver out on the