The door did not open. It dissolved, curling inward like vapor.
(Note: For the full rules tables, weapon profiles, and campaign integration, you will need to acquire the official sourcebook: Necromunda: Book of the Outlands.) necromunda+halls+of+the+ancientspdf
The 128-page supplement Necromunda: Halls of the Ancients marks a significant evolution in the lore and gameplay of the Ironhead Squat Prospectors The door did not open