Stephen Hunt - Secrets of the Fire Sea

Chalph responded to the game and pointed at another wall of steaming mist rolling up behind the first. 'And look, that one's my future. Come on, let's see if we can't find you one too.' It was a measure of how determined Chalph was to secure a life for Hannah off Jago that he had personally come to fetch her back to the cathedral. Ursine might be more or less the same height as their counterparts in the race of man, but the dense flesh and thick muscles of the bear-like people meant that a citizen of Pericur usually weighed twice as much as a similarly sized human. And Chalph urs Chalph had dragged his weight up every rung lining the air vent before wrestling open the heavy armoured door that opened out over the black cliffs of Jago.

Now both Hannah and Chalph had to descend hundreds of rungs back down to the subterranean city without slipping – always tricky the nearer you got to the surface; where the heat from the Fire Sea made sweaty, slippery hands – or paws – an occupational hazard when gripping the ladder. Ventilation passage ninety-two was a long way from the cathedral too, close to the submarine pens of the docks – like the rest of the capital, deep underground in the city's machine-hewn vaults. But vent ninety-two's isolation had an advantage. It was Hannah Conquest's favourite way up to the surface. Without a single u-boat sitting moored in the underground pens among the hundreds of tugs waiting unmanned for trade that would probably never return to the island, there were rarely any adults around to see Hannah emerging from the vent shaft and report her to the police militia. It wasn't so much that people feared Hannah and her friends might fall and break their necks – though that was often the stated concern that forbade them to leave the city – it was the fear that a careless child might leave open an armoured door up top, allowing in one of the beasts from the island's cold interior.

Down below it was just as she had expected. Hannah and Chalph emerged from the vent watched only by the dark, empty eyes of passages that led to the underground water locks and lifting rooms up to the sea-bed. There were no tug crew about the docks; most of the sailors would be back home, drawing half-pay while their fire-breaker vessels sat equally idle tied up around the pens. Guiding the Pericurian ambassador's u-boat out through the Fire Sea was a rare flurry of activity for the service this morning.

It was a long way back home through the Eliza Vaults – a lonely walk past empty warehouses and boarded-up taverns and guesthouses for sailors that no longer visited Jago's shores, before Hannah and Chalph began to pass through the more inhabited parts of the capital, each vault larger than the last as they followed the connected chambers towards the heart of Hermetica City. The two friends travelled on foot, ignoring the cries from gondolas drifting along the city's canals. Chalph was a junior apprentice in an increasingly impoverished foreign merchant house and Hannah a ward of the church, and neither had the little platinum pennies that a gondola owner would demand for a quick ride towards the cathedral.

It seemed to Hannah as if they had crossed every one of capital's arched bridges by the time the waters widened out into the Grand Canal, and here at least Hermetica City still felt like a metropolis. Noise. Smells. Activity. People about the arcaded passages of shops, colonnaded walks that were still polished and cleaned by the district's workers. People, it was always people that made a place. Little private skiffs moving down the canal, paddles turning under the power of chemical batteries with the whiff of eggs about them. Large oared barges moored for use as restaurants along the canal walls, bored kitchen staff leaning out of the windows to talk to idle gondola men. Hawkers' cries filling the air, knife-grinding for a penny a blade, pig gelders offering their services to the increasing numbers of people keeping livestock in their canal-side houses and apartments. Not trusting to the scant food supplies coming down from the greenhouses on the surface, not now so many of their labourers had left for the fertile wheat plains of Concorzia. Where once civilization had clustered around the warm coastline of Jago as the glaciers moved south and enveloped the world under white sheets of ice, now the islanders were themselves clinging ever tighter to the noise and din of each other, leaving the fringes of their capital to the water rats, cavern bamboo and the shadows of their ancient glory.

Even the roof of the subterranean vaults seemed to burn brighter in the centre of the city, the diode plates shimmering above in an approximation of the sun the mist-shrouded island's surface hardly ever saw, especially now, in the winter. Though the seasons mattered little to the Jagonese; not with their flash steam systems, powered by the underground water table warmed by volcanic action within, and the Fire Sea without. If only the island had more people. They could continue to live on Jago for another two thousand years – the machinations of the Archduchess of Pericur and the rising power of her nation on the opposite side of the Fire Sea be damned.

It wasn't long before Hannah and Chalph reached the largest – and, some said, most elegantly carved vault in the city, the vast circular cavern of the Seething Round. Here, flanking the grand canal, buildings stood as high as twenty storeys, sash windows sparkling as brightly as jewels. And there at its centre, Jago Cathedral, the Grand Canal surrounding it like a moat, spanned by three bridges leading across to its chambers. The largest bridge – the south – lay opposite the steps leading up into the Horn of Jago itself, the mountain long ago hollowed out like a termite mound for the richest vaults and streets of the capital, topped by the senate and capped at its summit by their flare-house. Yes, the light of Jago had once burned with far more than the Fire Sea's red glow reflected from its basalt cliffs. For those who ruled the city below from high inside the mountain, it probably seemed as if nothing had changed – and even Hannah, at her tender age, could see that that was part of the problem.

There were extra priests and vergers standing at all three bridges across to the cathedral now. Last month, Jago Cathedral had been broken into at night and the altar raided for silver, its collection boxes smashed. The crime no doubt perpetrated by would-be emigrants desperate to scrape together enough coins to bribe the harbour workers to look the other way when the next supply vessel docked.

Hannah chose the smallest bridge to try to sneak across to the cathedral, but Chalph's heavy six-foot figure following behind her was unmissable. A tonsured priest sucked on his teeth in a disapproving way as they passed. 'You may be late, Damson Conquest, but I can't be letting your friend into the cathedral.'

'Because he's ursine?'

'Because he's a believer, miss. In the scriptures of Pericur, unless you've renounced your faith, Chalph urs Chalph?'

'My house may be of a reforming bent,' said Chalph, 'but I don't believe we're ready to renounce the scripture of the Divine Quad quite yet. Atheists are treated less kindly in my nation than in yours.'

'Then you and your faith shall stay on this side of our good Circlist dwelling, my fine-furred wet-snout friend, while young Hannah can go and make her apologies to the archbishop for an appointment ill-kept.'

Chalph glanced knowingly at Hannah, who was looking annoyed that the priest had used the insulting Jagonese name for an ursine: wet-snout indeed. 'This place is just like the rest of Jago, it's a relic. You remember what you're going inside there for…it's your future.'

She shrugged. 'I'll meet you out in the park later. We'll see what the future looks like then.'

Hannah walked inside. Jago Cathedral wasn't a relic to her, it was home. Wheel windows a hundred feet across painted the nave of the cathedral with brightly coloured illumination, much of it speckled by lines of formulae traced across each stained glass light. Formulae had always been important to the Circlist church – the church without a god. Some of them were scientific, outlining the known building blocks of creation. Others were the proofs and balances of synthetic morality – equations that proved society worked best when people worked together, that kindness to the weak was a thing of glory, to do unto others as you would have done unto you. The quantitative proof for the qualitative teachings of Circlism. Hannah's eyes flicked across the stained glass. There, the elegant proof for the parable of the clear mind – openness of mind versus the infective vectors of a faith-based meme. Every koan and parable taught by the church was represented, through both equations and sublime rainbow-coloured images. Of all Jago's arts, stained glass was the most celebrated: as was attested to by the double-lancet windows as tall as the cathedral's spires, which adorned the island's most important building, the senatorial palace.