But they threaded it, and finally reached the rim of north circle, number 2 on Sax’s map. Looking down into it gave them a new perspective — a proper shape to the caldera and its circular embayments, a sudden drop to a heretofore hidden floor, a thousand meters below.
Apparently there was a climbing route down onto the floor of north circle; but when Ann saw the look on his face as she pointed it out — achievable only by rappelling — she laughed. They would only have to climb up out of it again, she said easily, and the main caldera wall was already tall enough. They could hike around north circle to another route instead.
Surprised by this flexibility, and thankful for it, Sax followed her around the north circle on its west circumference. Under the great wall of the main caldera they stopped for the night, popped the tent, ate in silence.
After sunset Phobos shot up over the western wall of the caldera like a little gray flare. Fear and dread, what names.
“I heard that putting the moons back in orbit was your idea?” Ann said from her sleeping bag.
“Yes, it was.”
“Now that’s what I call landscape restoration,” she said, sounding pleased.
Sax felt a little glow. “I wanted to please you.”
After a silence: “I like seeing them.”
“And how did you like Miranda?”
“Oh, it was very interesting.” She talked about some of the geological features of the odd moon. Two planetesimals, impacted, joined together imperfectly…
“There’s a color between red and green,” Sax said when it appeared she was done talking about Miranda. “A mixture of the two. Madder alizarin, it’s sometimes called. You see it in plants sometimes.”
“Uh-huhn.”
“It makes me think of the political situation. If there couldn’t be some kind of red-green synthesis.”
“Browns.”
“Yes. Or alizarins.”
“I thought that’s what this Free Mars-Red coalition was, Irishka and the people who tossed out Jackie.”
“An anti-immigration coalition,” Sax said. “The wrong kind of red-green combination. In that they’re embroiling us in a conflict with Earth that isn’t necessary.”
“No?”
“No. The population problem is soon going to be eased. The issei — we’re hitting the limit, I think. And the nisei aren’t far behind.”
“Quick decline, you mean.”
“Exactly. When it gets our generation, and the one after, the human population of the solar system will be less than half what it is now.”
“Then they’ll figure out a different way to screw it up.”
“No doubt. But it won’t be the Hypermalthusian Age anymore. It’ll be their problem. So, worrying so much about immigration, to the point of causing conflict, threatening interplanetary war… it just isn’t necessary. It’s shortsighted. If there was a red movement on Mars pointing that out, offering to help Earth through the last of the surge years, it might keep people from killing each other, needlessly. It would be a new way of thinking about Mars.”
“A new areophany.”
“Yes. That’s what Maya called it.”
She laughed. “But Maya is crazy.”
“Why no,” Sax said sharply. “She certainly is not.”
Ann said no more, and Sax did not press the issue. Phobos moved visibly across the sky, backward through the zodiac.
They slept well. The next day they made an arduous climb up a steep gully in the wall, which apparently Ann and the other red climbers considered the walker’s route out. Sax had never had such a hard day’s work in his life; and even so they didn’t make it all the way out, but had to pitch the tent in haste at sunset, on a narrow ledge, and finish their emergence the following day, around noon.
On the great rim of Olympus Mons, all was as before. A giant cored circle of flat land; the violet sky in a band around the horizon so far below, a black zenith above; little hermitages scattered in boulder ejecta that had been hollowed out. A separate world. Part of blue Mars, but not.
The hut they stopped at first was inhabited by very old red mendicants of some sort, apparently living there while waiting for the quick decline to strike them, after which their bodies would be cremated, and the ashes cast into the thin jet stream.
This struck Sax as overfatalistic. Ann apparently was likewise unimpressed: “All right,” she said, watching them eat their meager meal. “Let’s go try this memory treatment then.”
Many of the First Hundredargued for sites other than Underhill, arguing in a way that they didn’t even recognize as part of their group nature; but Sax was adamant, shrugging off requests for Olympus Mons, low orbit, Pseudophobos, Sheffield, Odessa, Hell’s Gate, Sabishii, Senzeni Na, Acheron, the south polar cap, Mangala, and on the high seas. He insisted that the setting for such a procedure was a critical factor, as experiments on context had proved. Coyote brayed most inappropriately at his description of the experiment with students in scuba gear learning word lists on the floor of the North Sea, but data were data, and given the data, why not do their experiment in the place where they would get the best results? The stakes were high enough to justify doing everything they could to get it right. After all, Sax pointed out, if their memories were returned to them intact, anything might be possible — anything — breakthroughs on other fronts, a defeat of the quick decline, health that lasted centuries more, an ever-expanding community of garden worlds, from thence perhaps up again in some emergent phase change to a higher level of progress, into some realm of wisdom that could not even be imagined at this point — they teetered on the edge of some such golden age, Sax told them. But it all depended on wholeness of mind. Nothing could continue without wholeness of mind. And so he insisted on Underhill.
“You’re too sure,” Marina complained; she had been arguing for Acheron. “You have to keep more of an open mind about things.”
“Yes yes.” Keep an open mind. This was easy for Sax, his mind was a lab that had burned down. Now he stood in the open air. And no one could refute the logic of Underhill, not Marina nor any of the rest of them. Those who objected were afraid, he thought — afraid of the power of the past. They did not want to acknowledge that power over them, they did not want to give themselves fully over to it. But that was what they needed to do. Certainly Michel would have supported the choice of Underhill, had he been still among them. Place was crucial, all their lives had served to show that. And even the people dubious, or skeptical, or afraid — i.e. all of them — had to admit that Underhill was the appropriate place, given what they were trying to do.
So in the end they agreed to meet there.
At this point Underhill was a kind of museum, kept in the state it had been in in 2138, the last year it had been a functioning piste stop. This meant that it did not look exactly as it had in the years of their occupancy, but the older parts were all still there, so the changes since wouldn’t affect their project much, Sax judged. After his arrival with several others he took a walk around to see, and there the old buildings all were: the original four habitats, dropped whole from space; their junk heaps; Nadia’s square of barrel vault chambers, with their domed center; Hiroko’s greenhouse framework, its enclosing bubble gone; Nadia’s trench arcade off to the northwest; Chernobyl; the salt pyramids; and finally the Alchemist’s Quarter, where Sax ended his walk, wandering around in the warren of buildings and pipes, trying to ready himself for the next day’s experience. Trying for an open mind.
Already his memory was seething, as if trying to prove that it needed no help to do its work. Here among these buildings he had first witnessed the transformative power of technology over the blank materiality of nature; they had started with just rocks and gases, really, and from that they had extracted and purified and transformed and recombined and shaped, in so many different ways that no one person could keep good track of them all, nor even imagine their effect. So he had seen but he had not understood: and they had acted perpetually in ignorance of their true powers, and with (perhaps as a result) very little sense of what they were trying for. But there in the Alchemist’s Quarter, he hadn’t been able to see that. He had been so sure that the world made green would be a fine place.