A humanoid he first took to be an ophidapt grabbed a questing tentacle and shoved back the soldier it was originally groping for. The tentacle proceeded to inject nanofilaments into the reptilian body. The humanoid should have been instantly paralysed. Instead it fired a proton weapon into the wall, frying the substructure from which the tentacle extruded, then it flung down the severed tentacle and incinerated that too. Thellant focused intently on a recording of this event—replayed from one of the many computers spread throughout the Jain architecture like grains of salt. He discerned that Jain nanofilaments had instantly come under attack, managing to penetrate no more than the upper layers of the reptilian’s skin. In fact some kind of viral assault shot back up them, paralysing the structure in the wall just instants before the . . . Thellant consulted other sources . . . before the dracoman incinerated it. So, not just Polity AIs—he must contend with these things as well.

‘Thellant.’

What, what now?

The source of that flat voice disappeared even as he groped for it. Perhaps some program injected from that dracoman, now propagating back? Gone now, yes. But it was also time for Thellant to disappear. The area opposite him was secure for him now. He stepped into the open and headed across the bottom of the trench. The Jain substructure they might be able to hold back, but he intended to slip past.

On the other side he passed the black pit of a mineshaft plummeting down into the bedrock. Spilling out of this, like silver worms, were foot-wide peristaltic pipes issuing from the robotic boring machines far below. Some of these pipes were split open, spilling slurries of powdered haematite, bauxite and malachite. All of them entered a pumping machine, and from that normal pipes of half the diameter ran down one side of a maglev tunnel spearing into darkness. Parked in the mouth of the tunnel, a boring machine lay like some massive steel grub with a cylindrical head overly endowed with teeth. Thellant walked past this and on into the tunnel’s darkness. All around him via the substructure he observed further disquieting scenes.

The substructure was attempting to return soldiers it now controlled to Coloron’s forces, but the dracomen spotted them instantly and destroyed them, for it seemed these creatures could detect Jain growth even at a distance. Elsewhere, Coloron’s drones or Golem soon detected other returnees and their fate was the same. Fortunately no dracomen were searching in his current vicinity. He reached a curve in the tunnel and halted. Because the substructure spread through the wall cavity beside him, he knew the enemy awaited ahead.