From publisher blurb:
Mournvault is a 5e supplement which aims to help you save prep time and impress your players.
This product offers you a ready-to-use location, which you can drop in any setting, along with detailed encounters that can become an adventure. All of this supported by maps, to complement your game without the need to prepare.
Descend into the enigmatic depths of the Underground, a vast subterranean realm filled with colossal caverns, bioluminescent flora, and ancient ruins. Amidst this labyrinth lies Mournvault, a once-glorious dwarven city now cursed and crumbling after its people awoke Tormenthar, a malevolent demigod. The Umbral Council, a dark cabal from the Shadowrealm, seeks to unleash this terror upon the world, using enslaved gravemauler trolls to break the seals imprisoning Tormenthar. In this perilous adventure, the characters must navigate the dangers of the Underground, confront the corrupted trolls, and thwart the Council's sinister plans before Tormenthar's wrath engulfs the surface world. Will you emerge victorious from the shadows, or become another lost soul in Mournvault's haunted depths?
This content is for groups of 14th to 15th level.