The Sunless Hall is a large natural cavern some way within Mount Orquond. It is considered part of the town of Fellgate even though it lies some way beyond the eastern extent of the settlement.
As well as the tunnels that lead up to the town, it has multiple passageways that lead into the wider tunnel system beneath the Cloud-Ankled Mountains, the legacy of the Old Dwarf Kingdom that once held sway.
The Sunless Hall today is primarily used as a marketplace for the subterranean races that come to Fellgate to trade. Goblins come to sell tin, copper, iron and more precious ores - and the odd treasure scavenged from ruins and catacombs that riddle the mountains. Gnomes from Gnomewarren also come to Fellgate by the Sunless Hall to sell their handiworks.