All that morning I paddled south, seeing no sign of human habitation on either bank except for a single parting glimpse of ancient, once-white buildings drowned amid the dead trees and brackish waters in what had once been the western bank and was now a swamp at the base of the bluffs there. Twice I put ashore on islands: once to relieve myself and the second time to store away the small backpack that was my only luggage. During this second stop—late in the morning with the sun warming the river and me—I sat on a log on the sandy bank and ate one of the cold meat and mustard sandwiches that Aenea had made for me during the night. I had brought two water bottles—one to fit on my belt, the other to stay in my pack—and I drank with moderation, not knowing if the water of the Mississippi was fit to drink and also not knowing when I would find a safe supply. It was afternoon when I saw the city and the arch ahead of me.

Sometime before, a second river had joined the Mississippi on my right, widening the channel significantly. I was sure that it must be the Missouri, and when I queried the comlog, the ship’s memory confirmed my hunch. It was not long after that when I saw the arch.

This farcaster portal looked different than the ones we had transited during our trip out to Old Earth: larger, older, duller, more rust-streaked. It may have once been high and dry on the west bank of the river, but now the metal of the arch rose out of waters hundreds of meters from shore. Skeletal remnants of drowned buildings—low “skyscrapers” from pre-Hegira days according to my newly informed architectural sensibilities—also rose from the sluggish waters.

“St. Louis,” said the comlog bracelet when I queried the ship’s AI. “Destroyed even before the Tribulations. Abandoned before the Big Mistake of ’08.”

“Destroyed?” I said, aiming the kayak toward the giant hoop of the arch and seeing for the first time how the west bank behind it curved around in a perfect semicircle, forming a shallow lake. Ancient trees lined the sharp arc of the shore. An impact crater, I thought, although meteor crater or bomb crater or power-source meltdown or some other variety of violent event, I could not tell. “How destroyed?” I said to the comlog.

“No information,” said the bracelet. “However I do have a data entry which correlates with the arch ahead of us.”

“It’s a farcaster portal, isn’t it?” I said, fighting the strong current here on the west side of the main channel to aim the kayak at the east-facing arch.

“Not originally,” said the soft voice on my wrist. “The size and orientation of the artifact coincide with position and dimensions of the so-called Gateway Arch, an architectural oddity built in the city of St. Louis during the time of the United States of America nation-state in the mid-twentieth century A.D. It was meant to symbolize western expansion of the hegemonic, Euro-descended proto-nationalist pioneers who migrated through here in their effort to displace the original, pre-Preserve, NorthAm indigenies.”

“The Indians,” I said, panting as I paddled the bobbing kayak through the last conflicting current and got us lined up with the huge arch. There had been an hour or two of rich sunlight, but now the cold wind and gray clouds had returned.

Raindrops pattered on the fiberglass of the kayak and rippled the wavetops on either side. The current now carried the kayak toward the center of the arch, and I rested the paddle a moment, making sure not to hit the mysterious red button by accident. “So this farcaster portal was built to honor the people who killed the Indians,” I said, leaning forward on my elbows.

“The original Gateway Arch had no farcaster function,” the ship’s voice said primly.

“Did it survive the disaster that… did this?” I said, pointing the paddle at the impact-crater lake and its assortment of flooded buildings.

“No information,” said the comlog.

“And you don’t know if it’s a farcaster?” I said, panting again as I paddled hard. The arch loomed high above us now, at least a hundred meters to its apex. The winterish sunlight glinted dully on its rusted sides.

“No,” said the ship’s memory. “There is no record of any farcaster on Old Earth.”

Of course there would be no such record. Old Earth had collapsed into the Big Mistake black hole—or been kidnapped by the Lions and Tigers and Bears—at least a century and a half before the TechnoCore had given the old Hegemony farcaster technology.

But there had been a small but very functional farcaster arch over that river—creek, actually—in western Pennsylvania where Aenea and I had ’cast from God’s Grove four years earlier. And I had seen others in my travels.

“Well,” I said, more to myself than to the idiot comlog AI, “if this isn’t it, we’ll just continue on downriver. Aenea had a reason for launching us where she did.”

I was not so sure. There was no telltale farcaster shimmer under this arch—no glimpse of sunlight or starlight beyond. Just the darkening sky and the black band of forest on the shoreline beyond the lake.

I leaned back and looked up at the arch, shocked to see panels missing, steel ribs showing. The kayak had already passed beneath it and there was no transition, no sudden shift of light and gravity and alien scents. This thing was nothing more than a broken-down old architectural freak that just happened to resemble a…

Everything changed.

One second the kayak and I were bobbing on the windswept Mississippi, heading into the shallow crater lake that had been the city of St. Louis, and the next instant it was night and the little fiberglass boat and I were sliding along a narrow canal between canyons of lighted buildings under a dark skylight half a kilometer or more above my head. “Jesus,” I whispered.

“An ancient messiah figure,” said the comlog. “Religions based on his purported teachings include Christianity, Zen-Christianity, ancient and modern Catholicism, and such Protestant sects as…”

“Shut up,” I said. “Good child mode.” This command had the comlog speak only when spoken to. There were other people boating on this canal, if canal it was. Scores of rowboats and tiny sailboats and other kayaks moved upriver and down. Close by, on riverwalks and esplanades, on skyways crisscrossing above the well-lighted waters, hundreds more walked in pairs and small groups. Stocky individuals in bright garments jogged alone.

I felt the gravity weigh my arms as I tried to lift the kayak paddle—at least half-again Earth’s was my immediate impression—and I slowly lifted my face to the view of those hundreds—thousands—of lighted windows and turrets, walkways and balconies and landing pads, of more lights as chrome-silver trains hummed softly through clear tubes above the river, as EMV’s sliced through the air overhead, as levitation platforms and sky ferries carried people back and forth across this incredible canyon… and I knew.

Lusus. This had to be Lusus.

I had met Lusians before: rich hunters come to Hyperion to shoot ducks or demi-gyres, richer offworld gamblers slumming in the Nine Tails casinos where I had worked as a bouncer, even a few expatriates in our Home Guard unit, felons fleeing Pax justice most likely. They all had the high-g, low-profile look of these short, stocky, prominently muscled joggers who chugged by on the riverwalks and esplanades like some primitive but powerful steam machines. No one seemed to be paying any attention to my kayak or me. This surprised me: from these natives’ perspectives, I must have appeared from nowhere, materializing under the farcaster portal behind me.

I looked back and understood why my appearance might have gone unnoticed. The farcaster portal was old, of course, part of the fallen Hegemony and of the former River Tethys, and the arch had been built into the Hive city walls—platforms and walkways studding and overhanging the slender portal—so that the segment of canal or river directly under the arch was the only visible section of this indoor city that lay in deep shadow. Even as I glanced back, a small motorboat glided out of that shadow, caught the glow of the sodium-vapor lights that overhung the river walkway, and seemed to pop into existence just as I had half a moment earlier.