The ash wastes of Necromunda are an unforgiving environment, utterly deadly for those who can't avoid its irradiated quicksand and toxic mine pits. Gangs that operate in the Great Equatorial Wastes, and the Ash Waste Nomads who call them home, often lay claim to the rugged Thatos Pattern constructions that litter the wilderness. Whether bridging foul hazards, marking the claim of a forgotten outpost, or connecting a settlement of Hab Modules via industrial scaffolding, the Thatos Pattern Platforms & Walkways are a common sight in the ash wastes.

Ash Wastes Arachni-rigs – known to House Van Saar as Arachnika Ash-jumpers – are armoured exoskeletons designed to traverse Necromunda’s rugged surface. Jump jets allow them to boost over obstacles, leap free of trouble, or unexpectedly drop in amongst their foes. Heavy weapons and surprising mobility make Ash-jumpers a match for rival vehicles and Nomad war parties, as they carve through Cargo-8 trains with laser and plasma blasts, clear rough terrain with flamers and rad guns, and snag targets with harpoons.

Even in the deadly Zone Mortalis, markets pop up in the crossfire as merchants and scroungers attempt to make a quick sale. Full of rare goods, counterfeit wares, and desirable weapons, these maze-like markets are frequently the sites of firefights between gangs, and the Palanite Enforcers are no stranger to the flimsy cover of a stall's awning.