Now the northern sea had flowed back into Chryse, and water was filling back into the lower end of Nilokeras and Kasei. The flat-topped hill that was Sharanov Crater stood like a giant castle keep on the high promontory over the mouth of this new fjord. Out in the middle of the fjord lay a long narrow island, one of the lemniscate islands of the ancient flood, now islanded again, stubbornly red in the sea of white ice. Eventually this fjord would make an even better harbor than Botany Bay: it was steep-walled, but there were benches tucked here and there that could become harbor towns. There would of course be the west wind funneling down Kasei to worry about, katabatic onslaughts holding the sailing ships out in the Chryse Gulf…

So strange. She led the group of silent Reds to a ramp that got them down onto a broad bench to the west of the ice fjord. By then it was evening, and she led them out of the rovers and down to the shore for a suhset walk.

At the moment of sunset itself, they found themselves standing in a tight unhappy cluster before a solitary ice block some four meters tall, its melted convexities as smooth as muscle. They stood so that the sun was behind the ice block and shining through it. To both sides of the block brilliant light gleamed off the glassy wet sand. An admonition of light. Undeniable, blazingly real; what were they to make of it? They stood and stared in silence.

When the sun blinked out over the black horizon, Ann walked away from the group and went alone up to her rover. She looked back down the slope; the Reds were still there by the beached iceberg. It looked like a white god among them, tinted orange like the crumpled white sheet of the ice bay. White god, bear, bay, a dolmen of Martian ice: the ocean would be there with them forever, as real as the rock.

The next day she drove up Kasei Vallisto the west, toward Echus Chasma. Up and up she drove, on broad bench after bench, making easy progress, until she came to where Kasei curved left and up onto the floor of Echus. The curve was one of the biggest, most obvious water-carved features on the planet. But now she found that the flat arroyo floor was covered by dwarf trees, so small they were almost shrubs: black-barked, thorny, the dark green leaves as glossy and razor-edged as holly leaves. Moss blanketed the ground underneath these black trees, but very little else; it was a single-species forest, covering Kasei Vallis from canyon wall to canyon wall, filling the great curve like some oversized smut.

By necessity Ann drove right over top of the low forest, and the rover tilted this way and that as the branches, tough as manzanita, stubbornly gave under its wheels and then whipped back into place when they were freed. It would be nearly impossible to walk through this canyon anymore, Ann thought, this deep-walled canyon so narrow and rounded, a kind of Utah of the imagination — or so it had been — now like the black forest of a fairy tale, inescapable, filled with flying black things, and a white shape seen scuttling in the dusk… There was no sign of the UNTA security complex that had once occupied the turn of the valley.

A curse on your house to the seventh generation, a curse on the innocent land as well. Sax had been tortured here, and so he had sown fireseed in the ground and torched the place, causing a thorn forest to sprout and cover it. And they called scientists rational creatures! A curse on their house too, Ann thought with teeth clenched, to the seventh generation and seven after that.

She hissed and drove on, up Echus, toward the steep volcanic cone of Tharsis Tholis. There was a town there, tucked on the side of the volcano where the slope leveled off. The bear had told her Peter was headed there, and so she avoided it. Peter, the land drowned; Sax, the land burned. Once he had been hers. On this rock I will build. Peter Tempe Terra, the Rock of the Land of Time. The new man, Homo martial. Who had betrayed them. Remember.

On she drove south, up the slope of the Tharsis Bulge, until the cone of Ascraeus hove into view. A mountain continent, puncturing the horizon. Pavonis had been infested and overgrown because of its equatorial position, and the little advantage that that gave the elevator cable. But Ascraeus, just five hundred kilometers northeast of Pavonis, had been left alone. No one lived there; very few people had ever even ascended it. Just a few areologists now and then, to study its lava and occasional pyroclastic ash flows, which were both colored the red nearest black.

She drove onto its lower slopes, gentle and wavy. Ascraeus had been one of the classic albedo feature names, as it was a mountain so big it was easily visible from Earth. Ascraeus Lacus. This was during the canal mania, and so they had decided it was a lake. Pavonis in that era had been called Phoenicus Lacus, Phoenix Lake. Ascra, she read, was the birthplace of Hesiod, “situated on the right of Mount Helicon, on a high and rugged place.” So though they had thought it a lake, they had named it after a mountain place. Perhaps their subconscious minds had understood the telescope images after all. Ascraeus was in general a poetic name for the pastoral, Helicon being the Boetian mountain sacred to Apollo and the Muses. Hesiod had looked up from his plow one day and seen the mountain, and found he had a story to tell. Strange the birth of myths, strange the old names that they lived among and ignored, while they continued to tell the old stories over and over again with their lives.

It was the steepest of the big four volcanoes, but there was no encircling escarpment, as around Olympus Mons; so she could put the rover in low gear and grind on up, as if taking off into space, in slow motion. Lean back in her seat and take a nap. Head on the headrest; relax. Wake up on arrival, up at twenty-seven kilometers above sea level, the same height as all the other three big ones; that was as high as a mountain could get on Mars, basically, it was the isostatic limit, at which point the lithosphere began to sag under the weight of all that rock; all of the big four had maxed out, they could grow no higher. A sign of their size and their great age.

Very old, yes, but at the same time the surface lava of Ascraeus was among the youngest igneous rock on Mars, weathered only slightly by wind and sun. As the lava sheets had cooled they had stiffened in their descent, leaving low curved bulges to ascend or bypass. A distinct trail of rover tracks zigzagged up the slope, avoiding steep sections at the bottoms of these flows, taking advantage of a big loose network of ramps and flowbacks. In any permanent shade, spindrift had settled into banks of dirty hard-packed snow; shadows were now a filmy blackened white, as if she drove through a photographic negative, her spirits plummeting inexplicably as she drove ever higher. Behind her she could see more and more of the conical northern flank of the volcano, and north Tharsis beyond that, all the way to the Echus wall, a low line over a hundred kilometers away. Much of what she could see was patchy with snowdrifts, windslab, firn. Freckled white. The shady sides of volcanic cones often became heavily glaciated.

There on a rockface, bright emerald moss. Everything was turning green.

But as she continued to ascend, day after day, up and up beyond all imagining, the snow patches became thinner, less frequent. Eventually she was twenty kilometers above the datum — twenty-one above sea level — nearly seventy thousand feet above the ice! — more than twice as high as Everest was above Earth’s oceans; and still the cone of the volcano rose above her, a full seven thousand meters more! Right up into the darkening sky, right up into space.

Far below scrolled a smooth flat layer of cloud, obscuring Tharsis. As if the white sea were chasing her up the slope. Up at this level there were no clouds, at least on this day; sometimes thunderheads would tower up beside the mountain, other days cirrus clouds could be seen overhead, slashing the sky with a dozen thin sickles. Today the sky above was a clear purple indigo suffused with black, pricked with a few daytime stars at the zenith, Orion standing faint and alone. Out to the east of the volcano’s summit streamed a thin cloud, a peak banner, so faint she could see the dark sky through it. There wasn’t much moisture up here, nor much atmosphere either. There would always be a tenfold difference between the air pressure at sea level and up here on the big volcanoes; pressure up here must therefore be about thirty-five millibars, very little more than what had existed when they had arrived.