The Scorched Ossuary

A lava tube on the Emberthrone's east slope, walls fused smooth by the flow that made it — used as an Imperium road-crew cache, abandoned, now home to cinder-crawlers and a colony of obsidian toads.

No fungi here — the walls hold residual heat that glows dim orange in the deep sections, making the cave its own uneasy lamp. The old caches are corroded but not empty. The cinder-crawlers have moved them around.