High on the southern face of the rift humans had named the Olympus Valley, a runnel of snowmelt, trickling down from the wet, heavy blanket of new snow as the sun probed at it, washed away a small lump of clay. In and of itself, it was a negligible lump, little more than a couple of centimeters across, which simply collapsed as its core of pebbles and tiny stones separated from one another. But that small lump was the keystone of an entire bed of pebbles and gravel which, in turn, helped shore up a field of loose stone . . . and that loose stone was under almost intolerable pressure as the massive weight of snow crushed down upon it. When the lump of clay disappeared, it allowed two of its neighbors to shift, and they, in turn, let still more bits and pieces of rock and mud wiggle and squirm.
By itself, it probably wouldn't have mattered very much. But it wasn't by itself, for the Athinai Resort lay on the flank of Mount Pericles, and an unsuspected branch of the Olympus Fault ran along the foot of the mountain. No one had ever realized it was there, and it was only a very minor fault. Yet it was enough. The tremor which ran through it that morning was scarcely enough to register, but the field of stone was already in slow, dreamy motion when the vibration hit. For just an instant, it seemed not to have had any effect at all . . . but then the first real boulder moved grindingly in its bed and nudged another rock aside. It was all quite invisible under the concealment of the innocent-looking white snowpack, and even if a single human in the Olympus Valley had had the slightest clue of what was happening, it was already far too late to do a thing about it.
Ranjit Hibson hid a smile as Susan unwrapped a second stick of gum and shoved it into her mouth. He didn't know where she'd picked up that particular habit—certainly their parents had done all they could to discourage it!—but it was a pretty reliable barometer of her mood. When she started shoving in extra sticks, she was apprehensive, excited, angry, or some combination of all three. At the moment, he figured it was probably ninety percent excitement and ten percent apprehension, for they were three-quarters of the way up to the beginners' slope landing.
For all her vocal disgust at being restricted to "Kiddy Hill," Susan had to be as aware of her inexperience as anyone else could possibly be. She was also aware that there was a world of difference between any simulator, however realistic, and the reality of a fast downhill run on real skis. So however much she might resent the restrictions she faced, she knew it was still—
He could never remember, later, what interrupted his train of thought. Not the first thing, at any rate. There had to have been something, some tiny clue his conscious mind didn't grasp at the time and never managed to get its hands on later, but he had absolutely no idea what it had been. One moment his thoughts were sliding along in their normal channels, and the next they simply stopped. Just like that. As if someone had thrown a switch in his brain that jerked his eyes away from his sister and to the sheer wall of snow-ribbed black rock sliding past just beyond the lift car's windows.
It was rough, that wall, with icicle-anchoring cracks and crevices which had caught and held shallow dustings of snow. He'd been fascinated when he first saw the striations across the rock face, but he'd also become quickly accustomed to them. Yet there was something different about them now, and his brow furrowed as he tried to figure out what it was. Then he had it. Fine sprays of snow and ice crystals—almost like snow devils, but not quite—had begun to swirl above the pockets of snow.
But there's not any wind, he thought in puzzlement. Or not that much, at least. And what's that sound? It's almost like—
He looked up through the crystoplast roof of the car, and his heart seemed to stop.
Csilla Berczi's head jerked up as the first dull rumble vibrated through her ears and the soles of her feet. She didn't recognize the sound, but something about it rang warning signals in the primitive, cavewoman side of her brain. Her eyes snapped around the horizon, sweeping it for threats, and then she sucked in as if someone had just punched her in the stomach.
The entire mountainside above the Athinai Resort seemed to heave and shudder. It was a dropping motion, at first, a slow-motion movement at the very peak of Mount Pericles that seemed to have nothing at all to do with the buildings and people at the mountain's foot. But that changed with terrifying speed. The slow motion quickened, sliding faster and faster, and as it quickened, it spread. More and more of the mountain seemed to crumble, curling over like the top of some monstrous ocean wave while a spume of snow blew high above it. Boulders and rock outcrops and the dense dark green of evergreen trees vanished into the accelerating maw of the avalanche, and Csilla Berczi heard herself crying out in horrified denial as a lethal wall of rock and snow and splintered trees—and human beings—engulfed the lift towers and exploded across the resort.
Like all modern ski resorts, especially on Gryphon, the Athinai had the very latest in seismic monitoring equipment. Gryphon's weather was frequently violent and always difficult to predict very far in advance, and the mountainous planet was also the most tectonically active of the Star Kingdom's three inhabited worlds. That combination was enough to create avalanche hazards often, particularly in late winter or spring, when sharp temperature changes were common, and Athinai's management had no intention of allowing itself to be caught by surprise if it happened to them. Remote listening stations and temperature monitors reported back to the resort's central data processing station on a real-time basis. That data also went out to the Gryphon Mountain Data Interface, which had begun as a private venture over two T-centuries before, where it was joined by satellite imagery which allowed GMDI to track accumulations and search for even the tiniest signs of instability on a planet-wide basis. In the last fifty years, the planetary government had gotten involved—Gryphon's resort attractions accounted for almost twenty percent of its foreign exchange, and the local government reasoned that allowing paying guests to be squashed would do unfortunate things to the tourist trade—and GMDI routinely spotted avalanche conditions even as they formed.
Whenever that happened, steps were taken either to relieve the conditions or to evacuate all of the threatened resorts' guests until the danger had passed. Given the capabilities of modern counter-grav, tractors, and pressers, it was usually possible to deal with the threat before it materialized, and perhaps that was part of the reason for what happened. Perhaps the human beings behind those monitors and all the sophisticated technology for intervening and forbidding avalanches had become too confident, too certain of their own ability to control the raw fury of nature. Or perhaps it was even simpler than that, for the sensor density in the critical area was lower than it ought to have been. No one had known the minor fault line geologists would later name the Athinai Switch even existed, and the detection net's designers had skimped just a bit on what everyone "knew" was a stable area and chosen to devote more of their resources to known fault areas. What they had installed around Mount Pericles met the seismologists' specs—barely—but it was spread thin, and no one would ever know if the fault had given any previous signs of its existence that better instrumentation might have detected.
And what someone might or might not have known was utterly irrelevant anyway as the entire side of the Mount Pericles snowpack broke loose and went thundering downward like the icy white breath of Hell.
"Oh my God!"
Honor didn't recognize the voice on the net. She knew it wasn't one of her people—or she thought it wasn't, anyway, she corrected herself almost instantly, for she really wasn't sure. The shock and horror which suffused the words could have disguised anyone's voice.
She exchanged a sharp glance with Chief Zariello, and then automatically ran her eyes over the icons in her HUD, making certain all of her pinnaces were where they were supposed to be. But the check was pure reflex. Some part of her already knew whatever was happening had nothing to do with the drop exercise.