Green Mars. Kim Stanley Robinson
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from the polar cap, had all eventually migrated to this deep zone, and combined to form a truly enormous underground reservoir, an ice and liquid pool that extended in a band all the way around the planet, underlying almost everything north of 60°north latitude, except, ironically, for a bedrock island on which the polar cap itself stood.
Ann had discovered this underground sea many years before, and by her estimates between sixty and seventy percent of all the water on Mars was down there. It was, in fact, the Oceanus Borealis that some terraformers talked about—but buried, deeply buried, and mostly frozen, and mixed with regolith and dense fines; a permafrost ocean, with some liquid down on the deepest bedrock. All locked down there for good, or so she had thought, because no matter how much heat the terraformers applied to the planet’s surface, the permafrost ocean would not thaw any faster than a metre per millennium—and even when it did melt it would remain underground, simply as a matter of gravity.
Thus the drilling rig before her. They were mining the water. Mining the liquid aquifers direct, and also melting the permafrost with explosives, probably nuclear explosives, and then collecting the melt and pumping it onto the surface. The weight of the overlying regolith would help push the water up through pipes. The weight of water on the surface would help push up more. If there were very many drilling rigs like this one, they could put a tremendous amount on the surface. Eventually they would have a shallow sea. An ice sea to start with, but between atmospheric warming, sunlight, bacterial action, increased winds—it would melt eventually. And then there would be an Oceanus Borealis. And the old Vastitas Borealis, with its world-wrapping garnet barchan dunes, would be sea bottom. Drowned.
She walked back to her car in the twilight, moving clumsily. It was difficult to operate the locks, to get her helmet off. Inside she sat before the microwave without moving for more than an hour, images flitting through her mind. Ants burning under a magnifying glass, an anthill drowned behind a mud dam … She had thought that nothing could reach her any more in this preposthumous existence she was living—but her hands trembled, and she could not face the rice and salmon cooling in the microwave. Her stomach was a small stone in her body. In the random flux of universal contingency, nothing mattered; and yet, and yet …
She drove away. She couldn’t think of anything else to do. She returned south, driving up the low slopes, past Chryse and its little ice sea. It would be a bay of the larger ocean, eventually. She focused on her work, or tried. She fought to see nothing but rock, to think like a stone.
One day she drove over a plain of small black boulders. The plain was smoother than usual, the horizon its usual five kilometres away, familiar from Underhill and all the rest of the lowlands. A little world, and completely filled with small black boulders, like fossil balls from various sports, only all black, and all faceted to one extent or another. They were ventifacts.
She got out of the car to walk around and look. The rocks drew her on. She walked a long way west.
A front of low clouds rolled over the horizon, and she could feel the wind pushing at her in gusts. In the premature dark of the suddenly stormy afternoon, the boulder field took on a weird beauty; she stood in a slab of dim air, rushing between two planes of lumpy blackness.
The boulders were basalt rocks, which had been scoured by the winds on one exposed surface, until that surface had been scraped flat. Perhaps a million years for that first scraping. And then the underlying clays had been blown away, or a rare marsquake had shaken the region, and the rock had shifted to a new position, exposing a different surface. And the process had begun again. A new facet would be slowly scraped flat by the ceaseless brushing of micron-sized abrasives, until once again the rock’s equilibrium changed, or another rock bumped it, or something else shifted it from its position. And then it would start again. Every boulder in that field, shifting every million years or so, and then lying still under the wind for day after day, year after year. So that there were einkanters with single facets, and dreikanters with three facets—fierkanters, funfkanters—all the way up to nearly perfect hexahedrons, octahedrons, dodecahedrons. Ventifacts. Ann hefted one after another of them, thinking about how many years their planed sides represented, wondering whether her mind might not reveal similar scourings, big sections worn flat by time.
It began to snow. First swirling flakes, then big soft blobs, pouring down on the wind. It was relatively warm out, and the snow was slushy, then sleety, then an ugly mix of hail and wet snow, all flailing down in a hard wind. As the storm progressed, the snow became very dirty; apparently it had been pushed up and down in the atmosphere for a long time, collecting fines and dust and smoke particulates, and crystallising more moisture and then flying up on another updraught in the thunderhead to do it again, until what came down was nearly black. Black snow. And then it was a kind of frozen mud that was falling, filling in the holes and gaps between the ventifacts, coating their tops, then dropping off their sides, as the keening wind caused a million little avalanches. Ann staggered aimlessly, pointlessly, until she twisted an ankle and stopped, her breath racking in and out of her, a rock clutched in each cold gloved hand. She understood that the long runout was still running. And mud snow pelted down out of the black air, burying the plain.
But nothing lasts, not even stone, not even despair.
Ann got back to her car, she didn’t know how or why. She drove a little every day, and without consciously intending to, came back to Coyote’s cache. She stayed there for a week, walking over the dunes and mumbling her food.
Then one day: “Ann, di da do?”
She only understood the word Ann. Shocked at the return of her glossolalia, she put both hands to the radio speaker, and tried to talk. Nothing came out but a choking sound.
“Ann, di da do?”
It was a question.
“Ann,” she said, as if vomiting.
Ten minutes later he was in her car, reaching up to give her a hug. “How long have you been here?”
“Not … not long.”
They sat. She collected herself. It was like thinking, it was thinking out loud. Surely she still thought in words.
Coyote talked on, perhaps a bit more slowly than usual, eyeing her closely.
She asked him about the ice-drilling rig.
“Ah. I wondered if you would run across one of those.”
“How many are there?”
“Fifty.”
Coyote saw her expression, and nodded briefly. He was eating voraciously, and it occurred to her that he had arrived at the cache empty. “They’re putting a lot of money into these big projects. The new elevator, these water rigs, nitrogen from Titan … a big mirror out there between us and the sun, to put more light on us. Have you heard of that?”
She tried to collect herself. Fifty. Ah, God …
It made her mad. She had been angry at the planet, for not giving her her release. For frightening her, but not backing it up with action. But this was different, a different kind of anger. And now as she sat watching Coyote eat, thinking about the inundation of Vastitas Borealis, she could feel that anger contracting inside her, like a pre-stellar dustcloud, contracting until it collapsed and ignited. Hot fury—it was painful to feel it. And yet it was the same old thing, anger at the terraforming. That old burnt emotion that had gone nova in the early years, now coalescing and going off again; she didn’t want it, she really didn’t. But damn it, the planet was melting under her feet. Disintegrating. Reduced to mush in some Terran cartel’s mining venture.
Something ought to be done.
And really she had to do something, if only just to fill the hours that she had to fill before some accident had mercy on her. Something to occupy the preposthumous hours. Zombie vengeance—well, why not? Prone to violence, prone to despair …
“Who’s building them?” she asked.
“Mostly Consolidated. There’s factories building them at Mareotis and Bradbury