Mattison isn't walking around on the dam just to show off. He needs to check out the fine points of the construction job. The dam slopes up and back at a 45-degree angle, and he wants its lip to rise just a little steeper even than that, so he moves along the face of the front, using his suit's shovel appendage to trim and shape the boundary between new rock and hot lava. He can feel mild warmth, not much more than that, through his suit, at least until he reaches a place where red can be seen crackling through the black, a tiny fissure in the dam, not dangerous but offensive to his sense of craft. He steps back, radios Foust and Herzog to turn the water back on, and has Hawks and Prochaska give the fissure a squirt or two.

  Then he checks the far side of the lava front to make sure that there's no likelihood that the top of the lava dome he has created is simply going to spill back the other way, down into the residential block behind the event. But no, no, the oozing lava is quietly piling itself up, filling in behind the dam, giving no indication that it means to go off in some new direction. Thank God for that much. Because of the way the magma pool lies in relation to the giant subterranean fault line that kicked this whole thing off, the surface flows tend to be consistently directional, rising on a diagonal out of the ground and moving, generally, from east to west only. With some residual slopping around -- lava is a liquid, after all -- but not, as a rule, with any unpredictable twisting and turning back the way they have just come.

  Just as Mattison is wrapping everything up, Gibbons radios him from the truck to say, "They want us to move along to San Dimas when we're done here."

  "Jesus," Mattison says. "San Dimas is way the hell to the east. Isn't everything over and done with back there by now?"

  "Apparently not. Something new is about to bust out, it seems."

  "Tell them we'll need a lunch break first."

  "They said they wanted us to -- "

  "Right," says Mattison. "We aren't fucking soldiers, you know. We're volunteer citizens and some of us have been working like coolies out here all morning. We get a lunch break before we start busting our asses again today. Tell them that, Barry."

  "Well -- "

  "Tell them."

  * * * *

  As Mattison has guessed, the San Dimas thing is serious but not catastrophic, at least not yet. The preliminary signs indicate a bad bust-out is on the way out there, and auxiliary crews are being pulled in as available, but one team more or less won't make any big difference in the next hour. They get the lunch break.

  Lunch is sandwiches and soft drinks, half a block back from the event site. They get out of their suits, leaving them standing open in the street like discarded skins, and eat sitting down at the edge of the curb. "I sure wouldn't mind a beer right now," Evans says, and Hawks says, "Why don't you wish up a bottle of fucking champagne, while you're wishing things up? Don't cost no more than beer, if it's just wishes."

  "I never liked champagne," Paul Foust says. "For me it was always cognac. Cour-voy-zee-ay, that was for me." He smacks his lips. "I can practically taste it now. That terrific grapey taste hitting your tongue -- that smooth flow, right down your gullet to your gut --

  "Knock it off," says Mattison. This nitwit chatter is stirring things inside him that he would prefer not to have stirred.

  "You never stop wanting it," Foust tells him.

  "Yes. Yes, I know that, you dumb fucker. Don't you think I know that? Knock it off."

  "Can we talk about smoking stuff, then?" Marty Cobos asks.

  "And how about needles, too?" says Mary Maude Gulliver, who used to sell herself on Hollywood Boulevard to keep herself in nose candy. "Let's talk about needles too."

  "Shut your fucking mouth, you goddamn whore," Lenny Prochaska says. He pronounces it _hooer_. "What do you need to play around with my head for?"

  "Why, did you have some kind of habit?" Mary Maude asks him sweetly.

  "You hooer, I'm going to throw you into the lava," Prochaska says, getting up and heading toward her. Mary Maude weighs about ninety pounds, Prochaska maybe two-fifty. He could do it with one flip of his wrist.

  "Lenny," Mattison says warningly.

  "Tell her to leave me be, then."

  "All of you," says Mattison. "Leave each other be. Jesus Christ, you think it's any easier for the others than it was for you?"

  It is the tension, he knows, of the morning's work that is doing this to them. They're all on the edge, all the time, of falling back into their individual hells, and that keeps them constantly keyed up to a point where it doesn't take much for them to get on each other's nerves. Of course, he's on the edge himself, he always will be and won't ever let himself forget it, but he is in recovery and they aren't, not really, not yet, and the edge is thinner for them than it is for him. Each of them has managed to reach the abstinence level, at least, but you can get to that point simply by having yourself chained to a bed; that keeps you out of the clutches of your habit but it doesn't exactly qualify you as being free of it. Real recovery comes later, if at all, and you can be a tremendous pain in the ass while you're trying to attain it, because you're angry all the time, angry with yourself for having burdened yourself with your habit and even angrier with the world for wanting you to give it up, and the anger keeps bubbling out all the time. Like lava, sort of. Makes a mess for everybody, especially yourself.

  They calm down, though, as the sandwiches hit their bellies. Mattison waits until they've eaten before he springs the San Dimas thing on them, and to his surprise there is no enormous amount of griping. The usual grumblers -- Evans, Snow, Blazes McFlynn -- do a predictable bit of grumbling, but not a whole lot, and that's it. They all would rather go back to the house and watch television, of course, but somewhere deep down they know that this volcano stuff is _actual worthwhile and important stuff_, perhaps the first time in their lives they have ever done anything even remotely worthwhile and important, and some part of them is tickled pink to be out here on the lava frontier. Hollywood is just a dozen miles west of here, after all. They all see themselves as characters in the big volcano movie, heroes and heroines, riding into battle against the evil monster that's eating L.A. That's how Mattison himself feels when he's out here, and he knows it's the same for them, maybe even more intense than it is for him, because he also has the self-esteem that comes from having made it back out of his addiction to this level of recovery, and they don't. Not yet. So they need to be heroes in a movie to feel good about themselves.

  They clean up the lunch mess and Mattison goes back to check his lava dam, which is holding good and true, and then off they go to San Dimas for whatever is to be required of them there.

  * * * *

  To get there they have to travel through the heart of the Zone, the very belly of the beast, the place where it all started.

  No. Where it all started was fifty or sixty miles down in the crust of the earth, and maybe fifty miles east of where Mattison and his pals are now: out in Riverside County, where the tremendous but hitherto unknown Lower Yucaipa Fault had chosen to release its accumulated tension about sixteen months ago, sending a powerful shock wave surfaceward that went lalloping through the Southland at a nifty 7.6 on the Richter. The earthquake made a serious mess out of Riverside, Redlands, San Bernardino, and a lot of other places out there in the eastern boondocks, and caused troubles of lesser but not inconsiderable degree as far west as Thousand Oaks and the Simi Valley.

  Californians don't enjoy big earthquakes, but they do expect and understand them, and they know that after you get one you wait for the lights to come back on and then you sweep up the broken crockery and you call all your friends in the affected area as soon as the phones are working so that, ostensibly, you can find out if they are okay, but really so that you can trade horrendous earthquake stories, and sooner or later the supermarket will reopen and the freeway overpasses will be repaired and things will get back to normal.

  But this one was a little different, because the Yucaipa thing had evidently been so severe a fracture that it had shattered the roof of a colossal pool of very deep subterranean gases that had been confined under high pressure for ten or twenty million years, and the gas, breaking loose like a genie that has been let out of a bottle, had taken hold of a whopping big column of molten magma that happened to be down there and pushed it toward the surface, causing it to come up right underneath the San Gabriel Valley, which is just a little way east of downtown L.A. You expect all kinds of troubles in L.A. -- earthquakes, fires, stupid politics, air pollution, drought, deluges and mudslides, riots -- but you don't seriously expect volcanoes, any more than you expect snow. Volcanoes are stuff for Hawaii or the Philippines, or southern Italy, or Mexico. But not here, thank you, God. We have our little problems, sure, but volcanoes are not included on the list.

  Now the list is one item longer.

  The first volcano -- the only one, so far, that had built a real volcano-style cone for itself -- had popped up at that freeway interchange near Pomona, a couple of days after the big Yucaipa earthquake. First there was thunder, never a common thing in Southern California, and the ground began to shake, and then it began to puff up, making a blister two or three yards high that sent the freeway spilling into pieces as though King Kong had bashed it from below with his fist, and smoke and fine dust started to spurt from the ground. After which came a hissing that you could hear as far away as Long Beach, and showers of red-hot stones went flying into the air, a pretty good indication that this wasn't simply an after-shock of Yucaipa. Then came the noxious gases, a gust of blue haze that instantly killed half a dozen people who were standing around watching; and then a thick column of black ash decorated by flashes of lightning arose; and then, seven or eight hours later, the first lava flow began. The sky was bright as day all night long from the bursts of incandescent gas and molten rock that were coming forth. By the next morning there was a volcanic cone forty feet high sitting where the interchange had been.

  If that had been all, well, you would watch it on the news for the next few nights, and then the Federal disaster teams would come in and the people in the neighborhood would be relocated and the _National Geographic_ would publish an article about the eruption, and somebody would start a class action suit complaining that the Governor or the President or somebody had failed to give proper warning to home buyers that volcanoes might happen in Pomona, and the religious crazies in Orange County would deliver sermons about sin and repentance, and after a while the impacted area would become a new tourist attraction, Pomona Volcanic National Park or something like that, and life would go on in the rest of Los Angeles as it always did once the latest catastrophe had turned into history.

  But the Pomona thing was only the beginning.

  That great column of magma, rolling upward from the depths of the earth on a long slant to the west, began breaking through in a lot of other places, bursting out like an attack of fiery pimples across a wide, vaguely triangular strip bracketed, roughly, on the east by the Orange Freeway, on the north by Las Tunas Drive and Arrow Highway, on the south by the Pomona Freeway, and on the west by San Gabriel Boulevard. Within the affected zone anything was likely to happen. Volcanic vents opened in completely random patterns. Lava flows the size of small creeks would crop up in people's garages, or in their living rooms. Fumaroles would sprout in a front lawn and fill a whole neighborhood with smoke and ash. Houses suddenly began to rise from the ground as subsurface bulges formed beneath them. A finger of fierce subterranean heat would whiz along a street and fry the roots of every tree and shrub in your garden without harming your house. All this would be accompanied by almost daily earthquakes -- not big ones, just nervewracking little jiggles of 3.9 or 4.7 that drove you crazy with fear that something gigantic was getting ready to follow. Then things would be quiet for a couple of weeks; and then they would start again, worse than before.

  Not all the lava events were trivial garage-sized ones. A few fissures as big as three blocks wide opened and sent broad sheets of molten matter rolling like rivers down main thoroughfares. That was when the Icelanders showed up to give advice about cooling the lava with hoses. Teams like Mattison's were called out to build lava dams, sometimes right across the middle of a big street, so that the flow would back up behind the new rock instead of continuing right on into the towns to the west -- or, perhaps, into Los Angeles proper, the city itself, still far away and untouched on the other side of the Golden State Freeway. The dams did the trick; but they had the unfortunate side effect of walling off the Zone behind ugly and impassable barriers of solid black basalt.

  Today's route takes Mattison and Company on a grand tour of the entire Zone. Freeway travel is a joke in these parts once you get anywhere east of Rosemead Boulevard, and there are new lava-created dead ends all over the place on the surface streets, and so it takes real ingenuity, and a lot of backing and filling, to make a short trip like the one from Arcadia to San Dimas, which once would have been a quick buzz down the 210 Freeway. Now it's necessary to back-track down Santa Anita around the new outbreaks on Duarte Road, and then to come up Myrtle in Monrovia to the 210, and take the freeway as far east as it goes before it gets plugged up by last month's uncleared lava, which is not very far down the road at all; and then comes a lot of cockeyed wandering this way and that on surface streets, north to south and north again, through such towns as Duarte and Azusa and Covina and Glendora, places that no Angeleno ordinarily would be going in a million years, in order to get to the equally unknown municipality of San Dimas, which is just a couple of hops away from Pomona.

  The landscape becomes more and more hellish, the further east they go.

  "_Look_ at all this shit," Nicky Herzog keeps saying, over and over. "_Look_ at it! This is fucking hopeless, you know? We all ought to give up and move to fucking Seattle."

  "Rains all the time," says Paul Foust.

  "You like lava better than rain? You like fucking black ashes falling from the sky?"

  "We don't give up," Nadine Doheny says dreamily. "We keep on keeping on. We are grateful for everything we have."

  "Grateful for the volcanoes," Herzog says, in wonder. "Grateful for the ashes. Is that what you think?"

  "Leave her alone," Mattison warns him. Nadine's conversation is made up mostly of recovery mantras, and that bothers the flippant, sharp-tongued Herzog. But Doheny is right and Herzog, smart as he is, is wrong. We don't give up. We don't run away. We stand our ground and fight and fight and fight.

  Still and all, the Zone looks awful and even after all this time he has not grown used to its hideousness. There are piles of ashes everywhere, making it seem as if a black snowfall had hit the area, and also, not quite as universally distributed but nevertheless impossible to overlook, little encrustations of cooled lava, clinging to houses and pavements like some sort of dark fungus. Light dustings of pumice drift on the breeze. The sky is white with accumulated smoke that today's winds have not yet been able to blow out toward Riverside. Where major fires have burned, whole blocks of rubble pockmark the scene.

  The truck has to detour around all sorts of lesser obstacles: spatter cones, small hills of tephra and lapilli and cinders and lava bombs and other forms of ejected volcanic junk, et cetera, et cetera. Occasionally they pass an active fumarole that's enthusiastically belching smoke. Around it, Mattison knows, are piles of dead bugs, ankle-deep, killed by gusts of live steam or poisonous vapors. The fumaroles are surrounded also by broad swaths of mud that somehow has been flung up around their rims, often quite colorful mud at that, green or pink or red from alum deposits, bright yellow where sulfur crystals abound. Sometimes the yellow is laced with streaks of orange or blue, and sometimes, where the mud is very blue, it is splotched in a highly decorative way by a crust of rich chestnut-brown. Mattison doesn't know which chemicals are causing these effects.

  "It's like fairyland, isn't it?" Mary Maude Gulliver cries out, suddenly. "It's like something out of Tolkien!"

  "Crazy hooer," Lenny Prochaska mutters. "I'd like to give you a fairyland, you hooer."

  Mattison shushes him. He smiles at Mary Maude. It's hard to see this place as a fairyland, all right, but Mary Maude is one of a kind. Give her credit for accentuating the positive, anyway.

  Aside from the mineral incrustations in the mud, the Zone shows color where the ground itself has been cooked by the heat of some intense outbreak from below. That ranges from orange and brick red through bright cherry red to purple and black, with some lively streaks of blue. But this show of color is the only trace of what might be called beauty anywhere around. Every building is stained with mud and ash. There are hardly any live trees or garden plants to be seen, just blackened trunks with shriveled leaves still hanging from the branches.

  There aren't many people still living in these neighborhoods. Most of those who could afford it have packed up all their worldly possessions and had them carted off to new homes outside the Zone and, in a good many cases, outside the state altogether. A lot of those at the very bottom of the income ladder have cleared out also, moving to the new Federal relocation camps that have been set up in downtown L.A., Valencia, Mojave, the Angeles National Forest, and anyplace else where there was no irate householders' association to take out an injunction against it. The remaining residents of the Zone, mainly, are the lower-middle-income people, the ones who haven't yet lost their houses but couldn't afford to hire moving companies and aren't quite poor enough to qualify for the camps. They are still squatting here, grimly guarding their meager homes against looters, and hoping against hope that the next round of lava outbreaks will happen on any street but their own.