They felt lighter when they landed on the cable, being about one hundred kilometers nearer the center of Gaea-and one hundred long kilometers from her floor. The gravity had dropped from almost one quarter gee to less than a fifth. Cirocco's pack weighed nearly two kilos less, and her body weight had de- creased by two and a half.

"It's a hundred kilometers to where the cable joins the roof," Cirocco said. "I'd say it's a thirty-five-degree slope here. It should be easy enough for now."

Gene looked sceptical.

"More like forty degrees, I'd say. Closer to forty-five. And it gets steeper. Say sixty degrees before we reach the level of the roof."

"But in this gravity-"

"Don't laugh at a forty-degree slope, " Gaby said. She was sitting on the ground, looking green but cheerful. She had thrown up, but said anything was better than being in the blimp. "I've done some climbing on Earth with a telescope strapped to my back. You've got to be in good shape, and we're not."

"She's right," Gene said. "I've lost weight. Low gravity makes you lazy."

"You people are defeatists." Gene shook his head. "Just don't think we're going to get a five to one advantage. And don't forget that pack masses almost as much as you do. Be careful with it."

"Hell, we set out on the longest mountain climb ever attempted by human beings; do I hear singing? No, nothing but grousing. "

"If there's songs to be sung," Gaby said, "we'd better sing'm now. We ain't gonna feel like it later."

Well, Cirocco thought, I tried. She was aware the trip was going to be hard, but felt the hard part would not begin until they reached the roof, which she thought they could do in five days.

They were in a dim forest. Trees of cloudy glass loomed over them, further filtering what light reached the twilight zone, giving everything a bronze hue. Shadows were conical and impenetrable, pointing the way cast, toward night. A canopy of pink, orange, blue-green, and gold cellophane leaves arched overhead, an extravagant sunset late in a summer evening.

The ground vibrated softly beneath their feet. Cirocco thought about the huge volumes of air rushing through the cable on its way to the hub, and wished there was some way of putting that immense power to use.

It was not difficult climbing. The ground was hard, smooth, packed dirt. The shape of the land was dictated by the winding of the strands under the thin layer of soil. It humped in long ridges that, after a few hundred meters, could be seen angling toward the sloping sides of the cable.

The vegetation grew most thickly where the dirt was deepest, between the strands. They adopted the tactic of following a ridge until it began to curl under the cable, then crossing a shallow gully to the next strand to the south. That would be good for another half kilometer, then they would cross again.

Each gully had a small stream at the bottom. None held more than a trickle, but the water flowed swiftly and cut deep channels in the dirt, all the way down to the cable. Cirocco guessed the streams must fall right off the cable somewhere to the south- west.

Gaea was as prolific up here as she was on the ground. Many of the trees bore fruit, and they were alive with arboreal animals. Cirocco recognized a sluggish, rabbit-sized creature that was edible and easy to kill.

By the end of the second hour Cirocco realized the others had been right. She knew it when a cramp seized her calf and sent her sprawling on the warm ground.

"Don't say it, damnit."

Gaby grinned. She was sympathetic, but still pleased with herself.

"It's the slope. It doesn't feel all that hard to go up it; you're right about the weight. But it's so steep you have to do it on your toes. "

Gene sat beside them, his back to the slope. Through a rift in the trees, they could just see a patch of Hyperion, shining bright and attractive.

"The mass is a problem, too," he said. "I've had to walk with my nose just about touching the ground to get moving at all."

"My arches hurt," Gaby confirmed.

"Me, too," Cirocco said, miserably. The pain was going away now as she massaged her leg, but it would be back.

"It's damn deceptive," Gene said. "Maybe we'd do better on all fours. We're making our thighs and the backs of our legs do too much of the work. We should spread it out some."

"He's got a point. And it would help us get in shape for the straight-up part. That's going to he mostly arm work. "

"You're both right," Cirocco said. "I was pushing too hard. We're going to have to stop more often. Gene, would you get that medical kit out of my pack?"

There were various remedies for sniffles and fevers, vials of disinfectant, bandages, a supply of the topical anaesthetic Calvin had used for the abortions---even a bag of berries that worked as a stimulant. Cirocco had tried them. There was a first-aid booklet Calvin had written that told how to deal with problems from a bloody nose to an amputation. And there was a round jar of violet salve Meistersinger had given her for "the pains of the road." She rolled up her pants leg and rubbed some on, hoping it would work as well for humans as it did for Titanides.

"Ready?" Gene was up, adjusting his pack.

"I think so. You take the lead. Don't go as fast as I was; I'll tell you if you're going too fast for me. We're going to stop in twenty minutes, rest for ten."

"You got it. "

Fifteen minutes later Gene was in pain. He howled, ripped off his boot, and massaged his bare foot.

Cirocco was glad for the chance to rest. She stretched out and dug into a pocket for the jar of ointment, then rolled over on her back and handed it. up-slope to Gene. With the pack under her she sat almost erect, but with her legs trailing down the slope. Beside hers Gaby had not bothered to turn over.

"Fifteen minutes up, and fifteen minutes resting. "

"Anything you say, boss lady," Gaby sighed. "I'll flay myself alive for you, I'll climb till my hands and feet are bloody wrecks. And when I die, just write on my tombstone that I died like a soldier. Kick me when you're ready to go." She began snoring loudly, and Cirocco laughed. Gaby opened one eye suspiciously, then laughed, too.

"How about 'Here lies a spacewoman'?" Cirocco suggested.

" 'She done her duty,' " Gene said.

"Honestly," Gaby sniffed. "Where's the romance in life? Tell somebody your epitaph and what do you get? Jokes."

Cirocco's next cramp came during the following rest period. Cramps, actually, as both legs were involved this time. There was nothing funny about it.

"Hey, Rocky," Gaby said, touching her shoulder hesitantly. "There's no sense killing ourselves. Let's take an hour this time."

"This is ridiculous," Cirocco managed to grunt. "I'm barely winded. It just doesn't feel right to sit on my butt." She looked at Gaby suspiciously. "How come you don't get cramps!"

"I'm slacking," Gaby admitted, with a straight face. "I hitch a rope to that butt you don't want to sit on, and let you do the donkey work."

Cirocco had to laugh, though weakly.

"I'll just have to live with it, " she said. "Sooner or later I'll be in better shape. Cramps won't kill me."

"No. I just hate to see you hurt."

"How about ten up, twenty down?" Gene suggested. "Just until we start to work ourselves into something more."

"No. We go up for fifteen minutes, or until one of us can't go on, whichever is sooner. Then we rest the same time, or until we're all able to climb. We do that for eight hours..." She checked her watch. "That's a little more than five hours from now. Then we make camp."

Gaby sighed. "Lead on, Rocky. That's what you're good at."

It was gruesome. Cirocco continued to have the greatest share of pains, though Gaby began to experience them, too.

The Titanide salve helped, but they had to use it sparingly. Each of them packed a medical kit, and they had already gone through Cirocco's supply. She hoped they would not he needing it past the first few days of the journey, but wanted to retain at least one jar for the climb up the inside of the spoke. After all, it was not unbearable pain. When it grabbed her she was likely to yelp, then sit down and wait for it to pass.

At the end of the seventh hour she relented, feeling a little chagrined at her own stubbornness. It was almost as if she had been trying to prove Bill was right, forcing herself to be tough, to go to the limits of her endurance and then a little beyond.

They made camp at the bottom of a gully, gathering wood for a fire but not bothering to set up their tents. The air was hot and muggy, but the fire was a welcome light in the increasing gloom. They sat around it at a comfortable distance, stripped down to their gaudy silken underclothes.

"You look like a peacock," Gene said, taking a drink from his wineskin.

"A very tired peacock," Cirocco, sighed.

"How far do you think we've come, Rocky?" Gaby asked. "It's hard to say. Fifteen kilometers? "

"I'll go along with that," Gene said, nodding. "I counted steps along a couple ridges and averaged it. Then I kept track of the number of ridges we crossed."

"Great minds think alike," Cirocco said. "Fifteen today, twenty tomorrow. We'll be at the roof in five days." She stretched out and watched the shifting colors of the leaves overhead.

"Gaby, you're elected. Dig into that sack and rustle us up some grub. I could eat a Titanide. "

They did not make twenty kilometcrs the next day; they did not make ten.

They woke with sore legs. Cirocco was so stiff she could not bend her knees without wincing. They stumbled around fixing breakfast and breaking camp, moving like octogenarians, then forced themselves through a series of kneebends and isometrics.

"I know this pack is a few grams lighter," Gaby moaned, as she slung it on her back. "I ate two meals out of it."

"Mine's gained twenty kilos," Gene said.

"Bitch, bitch, bitch. C'mon, you apes. You wonna live forever?"