Avalanches are hardly news in Icewind Dale. The frequency to which it is occurring, however, defies logic. What is the cause of this strange phenomenon? What horrors could have unleashed such force of nature with such reckless abandon? Horror Beneath the Frost is a slasher horror adventure set in Icewind Dale, deep within the Reghed Glacier. It features yetis, mind flayers and a boneclaw! The adventure is designed to be easily dropped into: • Any homebrew campaign where avalanches occur. • Icewind Dale: Rime of the Frostmaiden campaign. • Plague of Ancients Seasonal Campaign for the Adventurers League (AL) organized play program. Inside you will find: • A slasher horror adventure optimized for five characters with an average party level (APL) of 8. • Scaling advice for three to seven 5th to 10th level characters. • A printer-friendly version of the adventure. • 4 digital maps importable to Roll20, Foundry VTT and your VTT of choice. Includes gridded, grid-less and printer friendly versions of the maps. • D&D Adventurers League compatible adventure (Dungeon Seed: This Seems Familiar | DC-POA-JL01)

Chase a choldrith trying to incite a war! Detour through an abandoned dwarven mine when your path is blocked by a cave in! Fight through dangerous beasts to get back on the choldrith's tail. In this 6-8 hour adventure for 4-5 characters of 3rd level, explore an old dwarven mine and fight through a hive of dangerous beasts to get back on the trail of the choldrith your group has been pursing. Includes: A 6-8 hour adventure for 3rd level characters 2 DM maps Copies of the maps suitable for use in your favorite virtual tabletop Stat blocks for all monsters the players might encounter. 4 new undead versions of NPCs Be sure to check out the first two installments in this series: Into the Underdark - Part 1 A Family Affair Into the Underdark - Part 2 The Spider's Den

Undermountain: The Caverns of the Many-Legged is an adventure detailing a hidden mini-level for Dungeon of the Mad Mage for characters of levels 12-13. It uses some of the story and lore of that book, but it can be incorporated or dropped into any setting or homebrew campaign. In a hidden part of Undermountain, former slaves feed their fat, monstrous queen who is fixated on revenge. A broken drow house has finally found a place to call home – only to become abominations. And a massive beast slithers, hunting for anything to satiate its hunger and quell its madness. Welcome to the Caverns of the Many-Legged. Which side, if any, will adventurers choose as they explore this hidden mini-level for Dungeon of the Mad Mage? In this adventure, you will find: a mini-level that can be easily incorporated into Dungeon of the Mad Mage a vivid cast of unique monsters and NPCs, including chitine warriors, a choldrith queen, a spellcasting draegloth, a mad yuan-ti anathema, and others (stat blocks provided for all creatures not in the Monster Manual) locations that could be used or adapted elsewhere, such as a chitine colony and a drider-controlled drow fortress a combination of roleplay, exploration, and combat encounters

The greatness of a dwarven citadel is measured by its greatness of wealth. The dwarves steadily work mines and forges to fuel the wealth needed to make their presence known throughout the realms. Unfortunately, this also makes them known to those that would seek the opportunity to steal their glory and riches. This story occurs in a place that has experienced this struggle for millennia. New threats emerge as old threats become rivals through the tides of time. This story... your story... is another chapter of this ancient struggle.

The final confrontation with the giant, King Snurre, and the entry of mighty adventurers into the caverns under his stronghold (DUNGEON MODULE G3, HALL OF THE FIRE GIANT KING) discovered the Dark Elves, the Drow, had instigated the giant alliance and its warfare upon mankind and its allied races. This module contains background information, a large-scale referee's map with a matching partial map for players, referee's notes, special exploration and encounter pieces, a large map detailing a cavern area, encounter and map matrix keys, and an additional section pertaining to a unique new creature for use with this module and the game as a whole. A complete setting for play of ADVANCED DUNGEONS & DRAGONS is contained herein. This module can be played alone, as the first part of a series of three modules (with SHRINE OF THE KUO-TOA, D2, and VAULT OF THE DROW, D3), or as the fourth part of a continuing series of modules which form a special progressive campaign scenario (DUNGEON MODULES G1, G2, G3, D1, D2, D3, and Q1, (QUEEN OF THE DEMONWEB PITS). TSR 9019

Far in the future, bards sing tales of kings and conquerors from ages past - but from your present. The Hero-Kings of legend are your player characters from your campaign, who even now shape the course of Cerilian history. More than simply an adventure collection, this 160-page book enables you, the Dungeon Master, to turn ordinary domain actions into oppurtunites for heroic exploits. Each of the eleven "legends" set forth here is based on a different random event from the BIRTHRIGHT Rulebook. Don't allow a mere die roll to decide the outcome of a blood challenge, rebellion, intrigue, or magical event - make the PCs forge their own destinies by confronting a madman who is "Blood Hungry," wresting the "Fang of Kriesha" from its evil wielder's grasp, thwarting a rival regent's "Double Dealing," and saving all of Cerilia from "The Gift of Azrai." These adventures are suitable for PCs of all levels and classes - wheter regents, scions, or commoners - and can take place wherever you campaign is set. This book also includes an appendix that offers advice for running different types of BIRTHRIGHT campaigns and creating your own adventures fit for a king. TSR 3125

Rumors of faceless demonic creatures have been steadily rising in the Hillsfar region, and it is said that far below the surface of Faerun, nestled in the bowels of the Underdark, ancient terrors are stirring. The imperiled drow of Szith Morcane have extended an intriguing offer, but can the drow be trusted, and for how long? An eight-hour adventure for 11th-16th level characters.

On a nameless, featureless demi-plane the Tarrasque rages across an all-encompassing nothingness. Last seen on Faerun a century ago during the cataclysm of Odobaz, the battle mage order of the Eldritch Storm sacrificed itself to banish the mighty titan to its demi-plane prison. Now a foul power emerges in the High Ice and nightmare visions of the Tarrasque trampling cities wrack the minds of the living—can your adventurers defeat the Horror Under the Mountain?

An unexpected envoy arrives in Sporedome and offers to give aid against the fire giants of Maerimydra, if you are willing to help his people with a small problem. A two-hour adventure for 5th through 10th level characters. Optimized for five 8th level characters.

Part megadungeon, part underground expedition, Operation Unfathomable serves as both a one-shot adventure and a campaign framework. PCs are (optionally) drafted at swordpoint to recover the Nul Rod, a priceless artifact that was recently lost in a local prince's foolhardy attempt to destroy the Chaos Gods of the Underworld. The PCs have been drafted as an expendable set of pawns to venture into the vast and bewildering Underworld and retrieve the Nul Rod. With the Underworld's innumerable beasties being on high alert after the prince's expedition, the PCs must sneak through the incredibly dangerous Underworld. Fighting is not as important as stealth, fast-talking, and running away rapidly. This is the expansion from Sholtis's original Operation Unfathomable, released in Knockspell #5 (2011).

In the search for allies in the Underdark, you are called upon to travel through the recently opened Waydown sinkhole to find the lost myconid colony of Sporedome. It is said that they once cultivated a strain of mushrooms that could protect one from falling into madness. Can this be the cure for the rapidly spreading onslaught of insanity?

Tales of Lady Sepha Lekore are known throughout the lands. Now she’s gone missing and her father Lord Lekore is offering a reward to anyone that can find her. With promises of a tidy sum, the adventuring party can investigate the last place she was seen to try and locate her. What they find will take them into the Underdark lair of a drow noblewoman with her eloped love, the young Lady Lekore.

In the Anauroch desert, darkness is growing. The followers of the Vile Spore Goddess Zuggtmoy have stolen the dreams of the Bedine Seeress Deja, trapping them in an eldritch artifact. Unless her dreams are returned, the Seeress will descend into madness, and her people along with her.

The Underdark is a subterranean wonderland, a vast and twisted labyrinth where fear reigns. It is the home of horrific monsters that have never seen the light of day. It is here that the dark elf Gromph Baenre, Archmage of Menzoberranzan, casts a foul spell meant to ignite a magical energy that suffuses the Underdark and tears open portals to the demonic Abyss. What steps through surprises even him, and from that moment on, the insanity that pervades the Underdark escalates and threatens to shake the Forgotten Realms to its foundations. Stop the madness before it consumes you! Note for DMs: This adventure is not for the faint of hearted, to run or to play. The module starts with 10 NPCs traveling with the party through the grueling Underdark. This number can grow. The encounters within the book are often incredibly deadly for the characters that would be going through it. This is because the module expects them to run or talk their way through the events, or, in some cases, the module expects them to lose. If your players aren't the kind of party to run, talk, or surrender, do not get this adventure. The module almost requires that you use milestone leveling because the experience provided does not commonly get players to the levels they should be once they get to certain milestones in the story (7th when they leave the underdark, 15th when they face the demon lords.) Good luck and happy questing.

The kuo-toa are a piscine race with a psychic affliction that makes them behave erratically and invent gods when feeling threatened. That same affliction gives them the power to bring those gods to life. Blibdoolpoolp is the most widely worshipped, and thus most powerful, of their gods. Blibdoolpoolp views the kuo-toa as her children despite having been born after them. Like all good mothers, she nurtures and protects. One of her chief concerns is understanding the kuo-toa’s psychic affliction, which causes them to undermine themselves whenever they strive for greatness. She discovers that a corrupted elder brain deep in the Underdark has a connection to the race; though the connection gives them psychic powers, it also turns them into powerless thralls, explaining their self destructive behaviors. Constrained by the same leash on her children, Blibdoolpoolp seeks adventurers to destroy the elder brain. Its death would free the kuo-toa, but potentially at great cost: if the kuo-toa lose their powers, will Blibdoolpoolp die?

Are your player's moving out of Velkenvelve? Enjoying a stroll along the shores of the Darklake? On a day trip from Gracklstugh to Neverlight Grove? Sightseeing near Blingdenstone? Then Journey Through the Center of the Underdark is for you. Journey Through the Center of the Underdark contains several detailed encounters ideal for fleshing out traveling days between locations in Out of the Abyss. Furthermore, these encounters could be readily inserted into any 5th Edition Dungeons & Dragons Underdark oriented Forgotten Realms or home campaign setting. Designed for a party of 4-6 fourth through sixth level characters, with easy notes for adjusting encounter difficulties for lower or higher level groups, Journey Through the Center of the Underdark should provide 8-10 hours of exciting in game adventure. Written for your Rage of Demons Out of the Abyss campaign, Journey Through the Center of the Underdark is ideal for any descent into the depths your characters might take. Enjoy!

An escaped duergar slave stumbles into the village of Elventree. With her she brings a malady that grips the small settlement in a bout of madness that seems unshakable. Can you find the source of the madness and save yourself and the village’s inhabitants? A four-hour adventure for 5th-10th level characters.

A powerful new narcotic is making its way through the Spine of the World. Behind it is a secret that could change everything! Explore a lost city and discover the secrets hidden by the gods themselves. (TW: some drug use and the possibility for players to use drugs)

Ruins of the Grendleroot is a book of ten easy-to-prep and easy-to-run adventures for the fifth edition of the world's most popular fantasy roleplaying game. Designed for characters of 1st to 5th level, these adventures take place in the caverns, chambers, tunnels, and ruins of Blackclaw Mountain, within which lurks a strange otherworldly sentience known as the Grendleroot. Ruins of the Grendleroot focuses on the sense of mystery and wonder that comes from exploring ancient ruins and lost chambers. The central hub of these adventures, Deepdelver's Enclave, is a frontier outpost overlooking the ruined city of Shadowreach, set deep within the mountain. In Deepdelver's Enclave, adventurers and explorers recount tales of their explorations, trade treasure and artifacts, and enjoy their shared love of uncovering the mysteries of the mountain.

Eons ago, the demon lord Shomarrah defamed Lolth the Spider Queen, condemning herself into the cursed life of a massive purple worm. Now Shomarrah's desecrated body serves as a drow fortress, guarded by a mad sorcerer and his team of driders. What deeper evils lie within? "The Fasting Worm at the Spider Feast" is a Dungeons and Dragons 5th Editionmodule for a party of 3-5 players at level 8. This one-shot module is perfect for introducing your party to the Underdark and drow society, featuring a dungeon dive through a demon lord's snake-like carcass. Clerics in the party, upon completing the adventure, will be able to obtain access to the Feast domain. Details are provided at the end of the module