Charles Stross - The Merchant’s War

"No features visible on the outside." Huw scanned laterally with the binoculars, looking for anything that would give him traction on the thing. "Going by the trees... I make it fifty to eighty meters in radius. Very approximate. There's green stuff on the surface. Looks rough, like concrete. I'm going to approach it when I finish talking. If anything happens I'll head towards the road. Over."

Nothing was moving. Huw took a deep breath. He was nervously aware of his heartbeat, thudding away like a bass drum: What is this doing here? All too acutely, he felt a gut-deep conviction that historic consequences might

hinge on his next actions. Helge didn't feel anything like this when she stumbled on the Wu family's world, did she? Well, probably not-but that world was inhabited, and by people who spoke a recognizable language, too. No evidence of weird climatological conditions, no strange concrete domes in ancient subarctic forests. He checked his web cam briefly, then stood up in full view of the dome.

Anticlimax: nothing happened. Well, that's a relief. The small of his back itched. He walked around the deadfall, pacing towards the dome. Close up, he realized it was bigger than he'd thought: the curve of its flank was nearly vertical at ground level, stretching away above and to either side of him like a wall. Hmm, let's see. He looked down at the base, which erupted smoothly from a tumble of ferns and decaying branches. Then he looked up. From this close, he could see the treetops diverge from the curve of the convex hull. "Scratch the size estimate, it's at least a hundred meters in radius."

A gust of wind rattled the branches above him. The top of the dome was hard to make out against the background of gray clouds. Huw shivered, then reached out and touched the dome. It was cold, with the grittiness of concrete or sandstone. He leaned close and peered at it. The surface was very smooth, but occasional pockmarks showed where it had been scarred by the surface cracking away under the chisel-like blows of ice forming in tiny fissures on its surface. Finally, he leaned against it and listened.

"I don't hear anything, and it's cold-probably at ambient temperature. I think it's empty, possibly abandoned. I'm going to proceed around it, clockwise."

The direction he'd chosen took him downslope, away from the road. He walked very slowly, pausing frequently, taking care not to look back. If someone was observing him, he didn't want to tip them off to Yul and Elena's presence. The dome extended, intact, curving gradually away from the road. In places, trees had grown

up against it, roots scrabbling for purchase in the poor soil. It took Huw a quarter of an hour to realize that none Of them had actually levered their way into the concrete or stone or whatever the dome was made of. "It's not quite a flawless finish," he reported, "but I've got a hunch it's been here a very long time." He rubbed his gloved hands together to warm them: there was a distinct bite in the air, and the gusts were growing more frequent.

In the end, the hole in the dome came as a surprise to Huw. He'd been expecting some sort of opening, low down on the slope: or perhaps a gatehouse of some sort. But one moment he was walking around the huge, curving Hank of the thing, and the next moment the curved edge of the dome disappeared, as if a giant the size of the Goodyear blimp had taken a huge bite out of it. Huw slopped for a minute, inspecting the edge of the hole with his binoculars. "The opening starts at ground level and extends two thirds of the way to the top of the dome. Must be at least fifty meters wide. I'm going closer... the edge looks almost melted." He looked down. The trees were thinner on the ground, shorter, and the ground itself fell away in front of the opening, forming a shallow howl. Like a crater, he realized. Hey -a trickle of water emerged from the shadowy interior of the dome, feeding down a muddy, overgrown channel into a pond in the depression. The pond was almost circular. Something cracked the dome open. Something from -he walked away from the opening, trying to get a perspective on it- something firing downwards, from above.

He shook his head, and suddenly the whole scene dropped into perspective. The dark shadows inside the dome, looming: piles of debris. The melted edges: either the dome is self-healing, or it's made of something a whole lot more resilient than concrete. It hadn't shattered like masonry-it had melted like wax. He keyed his walkie-talkie again: "The dome's split open here. Some-thing energetic, punching down out of the sky. A long time ago." The way the crater had filled with water, the way the trees were so much shorter than their neighbors, almost as if-

Huw fumbled with his telemetry belt, then slipped one hand free of its glove in order to pull out the Geiger tube. "Got you," he muttered, holding it out in front of him. "Let's see." He flicked the switch on the counter pack, then advanced on the depression. The counter clicked a few times, then gave a warning crackle, like a loose connection. Huw paused, swinging around. It popped and crackled, then as he took a step forward it buzzed angrily. "Hmm." He turned around and walked back towards the dome. The buzzing subsided, back down to a low crackle. He moved towards the edge of the dome. As he approached the meltcd-looking edges the counter began to buzz-then rose to an angry whine as he brought the tube to within a couple of centimeters of the edge. "Shit!" He jumped back. "Yul, Elena, listen up-the edge of the hole is radioactive. Lots of beta and maybe alpha activity, not much gamma. I don't think-"he swallowed"-I don't think we're going to find anyone alive in here. And I don't want you touching the edge of the dome, or walking through the stream running out of it."

He swallowed again. What am I going to tell the duke this time? He wondered.

A hypothesis took root and refused to shake free: Imagine a nuclear installation or a missile command site or a magic wand factory. Or something. There'd been a war. It all happened a long time ago of course-hundreds of years ago. Everyone was dead, nobody lived here anymore. During the war, someone took a shot at the dome with a high energy weapon. Not an ordinary H-bomb, but something exotic-a shaped nuclear charge, perhaps, designed to punch almost all of its energy out into a beam of radiation going straight down. Or a gamma-ray laser powered by a couple of grams of isomeric hafnium. Maybe they used an intercontinental ballistic magic wand. Whatever it was, not much blast energy reached the ground-but the dome had been zapped by a stabbing knife of plasma like Lightning Child's fiercest punch, followed by a storm of secondary radiation.

Huw looked up at the underside of the dome. A gust of wind set up a sonorous droning whistle, ululating like the ghost of a dead whale. The dome was thick. He froze for a moment, staring, then raised his binoculars again. He raised his dictaphone, and began speaking. "The installation is covered by a dome, and back in fhe day it was prob-ably guarded by active defenses. You'd need a nuke to crack it open because the stuff it's made of is harder and more resilient than reinforced concrete, and it's at least three, maybe four meters thick. Coming down from the zenith, perhaps eighty meters off-center, the shotgun-blast of lightning-hot plasma has sheared through almost fifteen meters of this-call it supercrete? Carbon-fiber reinforced concrete?-and dug an elliptical trench in the shallow hillside. It must have vaporized the segment of the dome it struck. How in Hell the rest of the dome held-must have a tensile strength like buckminsterfullerene nanotubes. That's probably what killed the occupants, the shockwavc would rattle around inside the dome..."