Felisin followed. The thought of food made her mouth water. If there was enough cheese and bread she could save some for Heboric, though he insisted that it was fruit and meat that was needed. But both were worth their weight in gold, and just as rare in Skullcup. He’d be grateful enough for what she brought him, she knew.

It was clear that Sawark had received orders to see the historian dead. Nothing so overt as murder – the political risks were too great for that – rather, the slow, wasting death of poor diet and overwork. That he had no hands gave the Pit Captain sufficient reason to assign Heboric to the carts. Daily he struggled at his harness, hauling hundreds of pounds of broken rock up the Deep Mine to the shaft’s Nearlight. In every other harness was an ox. The beasts each hauled three carts, while Heboric pulled but one: the only acknowledgement the guards made to his humanity.

Beneth was aware of Sawark’s instructions, Felisin was certain of that. The ‘king’ of Skullcup had limits to his power, for all his claims otherwise.

Once they reached the main shaft, it was four hundred paces to Twistings’ Nearlight. Unlike Deep Mine, with its thick, rich and straight vein of Otataral running far under the hills, Twistings followed a folded vein, rising and diving, buckling and turning through the limestone.

Unlike the iron mines on the mainland, Otataral never ran down into true bedrock. Found only in limestone, the veins ran shallow and long, like rivers of rust between compacted beds filled with fossil plants and shellfish.

Limestone is just the bones of things once living, Heboric had said their second night in the hovel they’d claimed off Spit Row – before Beneth had moved them to the more privileged neighbourhood behind Bula’s Inn. I’d read that theory before and am now myself convinced. So now I’m led to believe that Otataral is not a natural ore.

That’s important? Baudin had asked.

If not natural, then what? Heboric grinned. Otataral, the bane of magic, was born of magic. If I was less scrupulous a scholar, I’d write a treatise on that.

What do you mean? Felisin asked.

He means, Baudin said, he’d be inviting alchemists and mages to experiment in making their own Otataral.

Is that a problem?

Those veins we dig, Heboric explained, they’re like a layer of once melted fat, a deep river of it sandwiched between layers of limestone. This whole island had to melt to make those veins. Whatever sorcery created Otataral proved beyond controlling. I would not want to be responsible for unleashing such an event all over again.

A single Malazan guard waited at Nearlight’s gate. Beyond him stretched the raised road that led into the pit town. At the far end, the sun was just setting beyond the pit’s ridge line, leaving Skullcup in its early shadow, a pocket of gloom that brought blessed relief from the day’s heat.

The guard was young, resting his vambraced forearms on the cross blades of his pike.