Chiurgeon Slump is a location in Torment: Tides of Numenera.
To open the Maw to Trade Post, Artaglio must be consumed by it. However, since Artaglio refuse to be eaten, you need to find another way. Ask Sheen that if she can make some chemicals that will open the Maw.
Sheen said she can create an essence of Artaglio, to fool Maw. You need to get some hair from Artaglio, then talk to Sheen again. Drink the essence then off yourself to Maw, the process will kill you but at least the portal is open.