She ran. Where to or for how long, she really couldn't say. The little flame of her oil lamp sputtered and went out a few times. She'd snap her fingers and make the wick flare to life, but she may as well have ran blind. The hallways were pitch black with soot and choked with smoke, every turn was a guess and every corridor a gamble. Unnatural screams echoed from every direction. Left, right, left again, was this the south or north end of the labyrinth? She had no idea. The next turn brought her face to face with a doorway completely consumed in blue fire. The room beyond was so bright she had to look through her fingers at it. A shadow covered her, a shape in the doorway: a hulking creature with a wolf-shaped muzzle and enormous pincers for hands, wreathed in the same blue flames. The screams were getting closer behind her, too. They had her cornered, again. The demon slammed its shoulders through the narrow opening, splintering the wood and stone. She dropped the lantern and let the wand in her sleeve fall into her waiting hand. With a word of power and a gesture, she appeared in the familiar bedroom: stuffy and reeking of wood smoke. She'd have to try again tomorrow, if she could remember. During an exploration on the sixth level of Undermountain, a strange invisible creature leads to a series of collapsed chambers that hide a forgotten secret and one of the most devastating forces known to the multiverse. Marambra Nyghtsteel, the forgotten apprentice of Halaster Blackcloak, has been locked away for an age deep within Undermountain. What point and purpose her forced seclusion has, only Blackcloak may know. When a spell consuming blue fire, known as The Spellplague is trapped within the chambers, a series of events have left Marambra, lost in her madness, struggling to survive.

Side-Trek adventure When your PCs gain access to the teleport spell, their whole world changes. That simple spell opens up instantaneous, long-distance travel. No more long overland journeys or dangerous retreats through hostile territory. All it takes is clasped hands and a word from the wizard, and poof! The PCs are where they want to go. Except that it isn’t that simple, because teleport isn’t foolproof. The off-target teleports are a matter of scattering your PCs someplace else on the map and forcing them to get their bearings and make the long overland journey anyway. But this Side Trek focuses on the really intriguing column on the teleport chart: “similar area.”

a baron recruits the party to find a set of magical swords as well as explore a mine shaft that connects to the under dark

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).

The most deadly dungeon ever devised! High-level characters brave the unexplored corridors of Deepearth to confront perhaps the most feared adversary in the AD&D game. The second chapter of the Bloodstone Pass saga follows the conclusion of the desperate war against the bandit army. A cold and bitter winter drives the villagers to the edge of starvation, and numerous horrors strike the town of Bloodstone Pass. Join the adventure as the heroes explore the depths of the ancient bloostone mines, now inhabited by fearsome demons. There they hope to uncover the fantastic treasures rumored to exist in the unknown darkness. But deep within the mines, all is not what it seems.... This module uses the new rules from the Dungeoneer's Survival Guide and Wilderness Survival Guide. The adventure also includes optional BATTLESYSTEM scenarios fought entirely underground. These supplementary products are not required to play the adventure, however. TSR 9168

This 4 hour adventure for 3rd level characters begins in a prison cell where the adventurers must figure out a way to escape, acquire weapons and armor to defend themselves more effectively, and most importantly, escape a repurposed dwarven forge that has been appropriated by a fire giant who uses slave labor and even a captured red dragon wyrmling to smelt ore and forge an arsenal under the volcano Mt. Hotenow.

Originally designed as a convention module, this adventure sends the heroes into the underdark to do battle against the mysterious denizens of the deep! A drow housemistress commissions the characters to acquire a mysterious weapon known to be in the hands of her dark elf enemies. Locating, identifying, and acquiring the magical weapon leads the heroes on a great trek across the underdeep, where they must battle svirfneblin, a powerful lich, and enemy drow. This adventure us specifically designed for play by drow characters, but can be used with any adventuring party. Pregenerated drow characters are included.

The Ghost Tribe of Orcs were driven from their home under Wyvern Tor by some terrible evil. They marched to Phandalin and attacked, only to be defeated. Now the heroes will go beneath Wyvern Tor to discover the terror that chased out the orcs and perhaps find the source of the orc’ssardonyx. Journey to Beneath Wyvern Tor is the third of four parts in the After Lost Mine series. It will play out the journey to the orc’s former cave settlement and then into the darkness beneath. Part IV will have the party deal with the terror from the Underdark that drove out the orcs.

The mine has been known as Tessount’s Folly for years, due to it producing nothing of value. Now Valmour, the youngest son of the mine’s late owner, has inherited the mine...and found something he should have left buried. Pgs. 56-81

This is a trapped corridor which can be dropped into any castle, dungeon, ruin or underground adventure. It features full rules on how to scare the living be-jesus out of your adventurers and have sone great fun with them too. Get ready... as the 'Umber Eyes' is ready to receive you...

The gnome village of Clefton is built on the sides of a deep gorge, their homes built safely into the gorge walls. But for the past two nights Clefton has suffered the attacks of sightless creatures that crawl down the walls and steal away the gnomes’ loved ones. It’s up to the PCs to follow the creatures’ trail back to The Draigesgyrn Caves and put an end to their threat. As the PCs explore the unusual cave complex, they may discover the caves are the empty husk of a colossal dragon, buried many years ago beneath a landslide. In the depths of these caves they encounter the dread spirit of the dragon rider and an entrance to the Underdark. Will they seal the entrance or will they begin a new adventure deep underground? The Draigesgyrn Caves is a D&D 5th Edition adventure suitable for four to five PCs of 5th level and estimated to take 4-6 hours. The adventure could be set in any mountainous area. In the Forgotten Realms, it might be set in the Fairheight Range on the Moonshae Isles. The end of the adventure introduces an option to begin an Underdark adventure or campaign. Includes: A map of the dragon husk caves by EB Moreno Two new monsters for 5th edition – the ghoulish ooze and a grimlock shaman Four new magic items

Far below the Fields of Petrichor is a vast cavern containing the skeletal remains of a long-dead Sonorous Titan, a whale-like beast that once floated through the skies of a lost age. Amongst the bones are ravines and grottos home to bizarre creatures and lost treasures that are as beautiful and valuable as they are deadly. Ghostly shapes swim through the air. Glowing mushroom groves hide frightened creatures. And the Titan’s bones sing sadly as an ambitious wizard and his weary hirelings dig for its precious marrow... ADVENTURE TYPE: Small Sandbox Dungeon DESIGN NOTES: This adventure is intended for characters levels 5 to 8. It includes several wilderness areas, a ruined village and a mining camp to explore. Each area contains various encounters and unique magical items.There are many opportunities for combat, but it is possible for players to explore most areas and complete many interactions without any combat at all, depending on their choices. INCLUDES: Story hooks, dialogue prompts, creature stat blocks, original creatures and treasures, and dungeon overview map. KEYWORDS: Grave, skeleton, ghost, undead, wizard, miner, puzzle, mushroom, myconid, hag, witch, social, curse, mutation, mutant, soul, insect, termite, scorpion, bat, monk, beetle, chicken

The Zhentarim ask the party to investigate what happened in one their most important underdark outposts. If the party accepts, they'll have to deal with maddening darkness, grimlocks, an insane kenku assassin and unpredictable mixtures of potions. A short, fun dungeon romp that is easily adapted to other settings and other patrons. The combination of utter darkness and a villain based on sound makes for fun shenanigans on the side of the DM. Feasible as a one shot for an efficient party. Two tendays ago, Zhentarim agents were to transport a shipment of rare potions between their Underdark outpost and the surface world. The shipment has yet to arrive, and the outpost is not responding to any sending spells. Growing worried, the outpost’s overseer sends a group of hireswords to investigate and return it to Zhentarim hands. This particular adventure deals with the delusions of madness of Fraz Urb'luu. It also features Muurmic, the mad kenku first described in the December 2015 issue of Dragon+.

The Borderlands. An untamed wild region far flung from the comforts and protection of civilization. A lone fortified Keep is the only bastion of Good desperately striving to maintain the forces of Chaos at bay. But Evil is everywhere, lurking in dark caves, fetid swamps, forlorn forests. Bands of cutthroat brigands and ruthless tribes of humanoids eager to clash with the forces of Food rove the region. The Borderlands hold many secret wondrous locations, and opportunities for fame, prestige, and fortune are plentiful. But equally abundant are the perils, risks, and challenges to those brave enough to explore the wilds. Sharpen your swords and axes. Purchase your iron rations and tinderboxes. And Don't forget at least one 10-foot pole. Adventure awaits those with the mettle to confront Chaos in the Borderlands!

More than a hundred years ago, Delbera Axebringer—a mighty warrior and dwarven leader—slew the necromancer Audalot Karexin, but spared his young apprentice Zohir. In the ensuing decades, the bitter survivor brooded and plotted her revenge. Now, descendants of the Axebringer clan are vanishing, dragged screaming into the darkness by the animated bodies of their fallen kin. The Axebringers and their hometown of Davarn need heroes to break this family curse. What mysteries lie sealed within Delbera Axebringer’s ancient abandoned fortress? And what challenges lurk along the Blighted Path winding through the Darklands beneath Golarion’s surface? Down the Blighted Path is a deluxe adventure for 5th-level characters, and includes 64 action-packed pages of exciting battles, supernatural mysteries, and monstrous foes, plus a gorgeous double-sided poster map featuring an overview of the dwarven trading post of Davarn and a miniatures-scale battlemap! The author of this adventure, Monica Marlowe, was the winner of the 2015 RPG Superstar contest, in which hundreds of unpublished authors competed or the chance to write a Pathfinder Module. In addition to her adventure, this book contains a host of new monsters and magic items designed by the contest’s runners-up. Players can expect to reach 7th level upon completion of this adventure—if they can survive its deadly haunts, Darklands horrors, and furious villains both living and undead!

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?

The Nexus spore is an intriguing Underdark adventure that can be sewn into any subterranean setting. This one-shot production was designed with long campaigns in mind, for when you want to break up the narrative to keep things fresh and interesting. This short adventure is ideal for players of level 5-7, although, much like the length of the adventure, it is easy to adjust. The adventure fits well into a single long session, or 2-3 short sessions. It comes complete with maps, stat blocks, boxed descriptions and a rare magic item.

TENTACLES. VERY DANGEROUS. YOU GO FIRST. Adventure in the Underdark, Part Two The colony of svirfneblin, while grateful for the adventurers’ deeds, is still in need of a reliable source of drinking water. The kuo-toa hold the lake, and there is the matter of the tentacled menace the party faced previously… This adventure is a continuation of Tentacles. Why Did It Have to Be Tentacles?, but can be run by itself as well. It is designed to easily fit into any standard fantasy setting. A 4-hour adventure for 6th-8th level characters

Centuries ago, a powerful wizard locked himself in his inner sanctum to dedicate his life to the pursuit of knowledge. His discoveries and magic remain sealed inside to this very day. Solve his riddle and unravel the fate of the wizard Maalzinabar and the sinister evil lurking in the depths. A 2-3 hour adventure for 5th-12th level characters