![[Pasted image 20251212134644.png]] **Type:** Maze Beneath a Mountain **Location in Faerûn:** Western **Land Region in Faerûn:** [[The Sword Coast]] (Under [[Waterdeep]]) **Note:** Undermountain sprawls for untold miles beneath [[Mount Waterdeep]], a nightmarishly vast labyrinth exists, cultivated by the mad archmage [[Halaster Blackcloak]]. Its levels shift, expand, and devour themselves according to dark magics, making maps unreliable and survival a matter of luck as much as skill. Every imaginable horror has a place here, beholders, drow enclaves, forgotten vaults of [[The Netherese]], and wandering constructs born from Halaster’s deranged genius. Deep within lies [[Skullport]], a lawless, shadow-drenched city of slavers, pirates, and dark merchants who thrive in the dungeon’s gloom. Undermountain is a proving ground, a graveyard, and a legend- adventurers descend seeking treasure and glory, but only the fortunate or the damned ever return.