The Underdark  world illustration - Fantasy theme
Fantasy

The Underdark

S
Sigma_Wolf

Includes drow cities, aboleth strongholds, realms of Illithids, bioluminescent fungus and crystals.


Author's Note: (WIP) Original credit and idea for this world goes to Piemcdowell. I think having a world based on the Underdark is a great idea. It's such a mysterious and dangerous alien realm, but also so full of magic and wonder. I'm going to be working on the maps to give them detail and visual reference. The Underdark is a very vertical realm and I wish we had a vertical layered mapping system to represent it, but F&F is lacking that feature so I will be using descriptions to let Franz and players know if they are in a surface, upper, mid, or lower region. The basic 5E stuff fits the Underdark pretty well but I will add in some races and classes that better fit the Underdark's lore and flavor. I intend to add monsters as well because there are so many nasty, vile things lurking in those dark depths.
Played12 times
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Created
27 days ago
Last Updated
14 days ago
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Baldurs Gate

Baldurs Gate

Baldurs Gate is a bustling metropolis that lies on the merging paths of trade routes, filled with merchants, adventurers, and shadowy figures alike. The streets teem with life, emanating the sounds of bartering, laughter, and the occasional burst of magic. Its high stone walls, adorned with colorful banners, stand as sentinels over the vibrant street markets and the opulent mansions of the wealthy. The city is steeped in a rich history of both heroic tales and dark deeds, making it a place of intrigue and endless adventure.

Buried Realms

Buried Realms

Beneath the desert of Anauroch, the Buried Realms are a labyrinth of ancient Netherese ruins, now home to the unspeakable phaerimm. This area is shrouded in mystery and danger, with the remnants of a once-great civilization lying in wait, guarded by the malevolent presence of the phaerimm.

Darklake

Darklake

The Darklake located in the middledark levels is a vast underground lake surrounded by towering stalagmites and stalactites, with a cavern ceiling that reaches over 1,000 feet high in some areas. The lake connects the settlements of Gracklstugh, Mantol-Derith, and Sloobludop, and is patrolled by the duergar, who keep a watchful eye over the waters.

Deep Raurin

Deep Raurin

Deep Raurin is a vast and ancient expanse beneath the Dust Desert, where remnants of long-lost civilizations like Nar, Raumathar, and Imaskar lie hidden. The air is thick with mystery, and the echoes of forgotten empires resonate through its dark tunnels and caverns, waiting to be uncovered by brave adventurers.

Deep Wastes

Deep Wastes

The Deep Wastes is a vast, sparsely populated underground domain that stretches beneath the Dalelands and the Moonsea. Once home to the drow city of Maerimydra, it is now a wild and largely unexplored area, filled with remnants of its dark past and the echoes of ancient power.

Drow Noble Houses of Alpha and Omega

Drow Noble Houses of Alpha and Omega

In the gloomy twilight city of N'Zarath, this drow conclave is a realm where the noble houses of Alpha and Omega thrive. Founded by the twin brothers Valmyr and Xelthir Vandor, these houses symbolize the struggle against Lolth's tyranny, two noble houses stand as an eternal paradox—one embracing the brilliance of creation, the other the abyss of endings.

Earthroot

Earthroot

The Earthroot is a vast and mysterious domain located beneath the plateau of Thay and the Sunrise Mountains. It is home to the drow city of Undrek'Thoz and the duergar realm of Fraaszummdin, featuring frigid northern reaches with ice formations and caves, while its southern portions extend beneath the Dust Desert, concealing ancient secrets from lost civilizations.

Erelith

Erelith

Erelith is a sprawling subterranean realm, home to the drow, where luminescent fungi illuminate vast caverns and labyrinthine tunnels. The air is thick with magic and tension, as various factions vie for control of the precious resources found here, such as rare crystals and enchanted ores. It has various trade routes and some lead to the surface close to the city of Waterdeep.

Faerun's Embrace

Faerun's Embrace

Faerun's Embrace is a sprawling region characterized by lush valleys and rugged mountains, where ancient secrets lie buried beneath the rich soil. The diverse landscape is dotted with small villages, mystical groves, and hidden ruins, all under the watchful eye of the Starlit Peaks that rise majestically in the distance. This area is a bastion of magic and untamed nature, filled with vibrant flora and fauna that thrive in its enchanting environment.

Gauth Grottoes

Gauth Grottoes

The Gauth Grottoes are a mesmerizing area of the Underdark, characterized by cascading waterfalls that echo through the caverns and vibrant bioluminescent mushroom forests that illuminate the darkness. This unique ecosystem thrives in the Middledark, with some sections extending into the Lowerdark, creating a surreal landscape untouched by the chaos of the surrounding regions.

Giant's Chalice

Giant's Chalice

Giant's Chalice, known as Suswynfa to its octopoid inhabitants, is the largest freshwater lake in the Lowerdark, characterized by its U-shape and vibrant ecosystem. It serves as a crucial habitat for various creatures and a trading hub for the blue ring octopuses and sea elves. Within its depths laid glowing coral reefs, whose light could be seen from above the water in some parts. Mindflayers from Oryndoll introduced vampire squids to the lake's ecosystem which are a constant threat.

Glimmersea Region

Glimmersea Region

The Glimmersea, also known as the Sea of Starry Night, is a vast ocean located 20 miles beneath the Sea of Fallen Stars. It features immense vaults filled with luminescent rocks that create a starry reflection on its surface, while powerful aboleth cities and outposts of kuo-toa and sahuagin lurk in its depths, making it a perilous yet beautiful realm.

Great Bhaerynden

Great Bhaerynden

Great Bhaerynden, also known as the Deepwilds, is a vast and ancient domain beneath the plains of Shaar, once the homeland of the dwarves. Following a catastrophic collapse caused by drow civil strife and magical mishaps, the region transformed into a chaotic landscape of rifts, caverns, and scattered settlements, where gold dwarves, drow, and various other creatures vie for control and survival. It's full of Underdark creatures on every level Upper, Middle, and Lowerdark.

House Veynrae

House Veynrae

House Veynrae is a hidden sanctuary within the Underdark, where drow reject the cruel worship of Lolth in favor of Eilistraee, the Dark Maiden. This stronghold, Velath Serin, is a palace cloaked in illusion magic, concealing sacred groves filled with bioluminescent flora, where the Moonblades and Twilight Singers gather to honor their goddess and protect the lost.

House Xilthrae

House Xilthrae

House Xilthrae is a shadowy enclave of round towers, showcasing elegant dark elf architecture. The area is steeped in tension, with its matron still loyal to Lolth while many male nobles secretly support the Twilight Council of N'Zarath, creating an atmosphere of intrigue and conflict.

Llurth Dreier

Llurth Dreier

A massive ruined drow city located beneath the Shaar, once even larger than Menzoberranzan. It is located in the mid level of the Underdark. After its destruction, all that remained were fields of rubble and stones, though holes and gaps permitted entry to the remnants of the drow buildings. Oozes and aberrant creatures lurked in the darkest parts.

Menzoberranzan

Menzoberranzan

The most famous Drow city, known for its brutal society and relentless pursuit of power. It resides in the upperdark region of the Underdark.

Netherese Caverns

Netherese Caverns

The Netherese Caverns is a sprawling labyrinth of tunnels and chambers, steeped in the remnants of the ancient Netherese city of Philock. Treasure hunters brave the dark depths, seeking riches among the tombs, but an unknown evil lies in wait, preying on the unwary.

N’Zarath

N’Zarath

N’Zarath the city of twilight gets it's name from the massive glowing crystal formations that keep the city in a perpetual state of twilight. It is a thriving trade city nestled within the upper level of the Underdark, welcoming all races who possess coin or goods to barter. Governed by a council of underdark denizens instead of drow tyrants, it operates under a strict code where gold is law, and contracts are sacred, making it a place of both commerce and danger. The city has a thriving drow population and some of them serve Lolth and seek to overthrow the city council.

Old Shanatar

Old Shanatar

Old Shanatar is a vast and ancient domain of the Underdark, once a thriving realm of dwarves, now a shadow of its former glory. It features a network of expansive tunnels and grand halls, many of which have been repurposed or destroyed by the dark denizens that now inhabit it.

Rothé's Run

Rothé's Run

Rothé's Run is a bustling underground trade route that connects the shadowy city of N'Zarath to the surface world. The route is lined with glowing fungi and ancient crystal formations that serve as a natural source of light. The tunnel is kept safe and well maintained, serving as both a path for merchants and a haven for those seeking refuge from the dangers above or deeper below.

Shaar Plains

Shaar Plains

The Shaar Plains stretch endlessly across the southern reaches of Faerûn, a vast expanse characterized by rolling grasslands dotted with occasional hills and clusters of wildflowers. The sky is often a bright blue, with clouds lazily drifting by. Herds of wild beasts roam freely, and nomadic tribes traverse the land, living in harmony with the natural rhythms of the plains.

The Darklands

The Darklands

The Darklands is a sinister and perilous expanse within the Underdark, characterized by its vast, lightless caverns, labyrinthine tunnels, and massive chasms filled with hazardous terrain. Home to ancient and powerful creatures, this region is a realm of madness and danger, where the oppressive darkness can drive even the strongest minds to insanity. Much of this region is in the mid and lower depths of the Underdark.

The Demonweb Pits

The Demonweb Pits

The Demonweb Pits are a twisted labyrinth of dark, sticky webs that stretch as far as the eye can see, reflecting the chaos and malice of Lolth, the Spider Queen. This eerie domain is illuminated by a faint, unnatural glow that emanates from the webs themselves, revealing shadowy figures and nightmarish creatures lurking just beyond the strands. The air is thick with a sense of dread, and the echoes of distant screams reverberate through the vast caverns, reminding all who enter that they are in the depths of a god's terrifying realm.

The Firelands

The Firelands

The Firelands is a perilous volcanic region beneath the jungles of Chult, characterized by extensive lava tubes and fiery landscapes. At its heart lies the Burning Rift, a chaotic nexus of portals to the Elemental Plane of Fire, teeming with azer, flamesnakes, magmins, and salamanders that have crossed over from their fiery home.

The Labyrinth

The Labyrinth

The Labyrinth is a vast network of lava tube tunnels made of cold black basalt, stretching between the Upperdark and Middledark beneath the Dessarin River. It features treacherous paths, bridges, and rifts leading to massive chasms, with ancient runes that few can decipher, making navigation perilous for the unwary. The Upperdark portion contains a maze of dwarven ruins now inhabited by various tribes of minotaur.

The Northdark

The Northdark

The Northdark is a vast and treacherous region in the Underdark, filled with twisting tunnels, massive caverns, and subterranean cities. It is home to powerful drow cities, monstrous creatures, and ancient ruins, making it one of the most dangerous parts of Faerûn.

The Serpent Deeps

The Serpent Deeps

An extensive network of caverns beneath the Black and Mhair Jungles, the Serpent Deeps stretch from Delselar to Mhairhetel and Lapalgard. Filled with water from the Lapal Sea, these caverns feature volcanic activity, deep sinkholes, and flooded lava tubes, creating a treacherous environment inhabited by various tribes of troglodytes, lizardfolk hybrids, and ancient sarrukh.

The Sharnlands

The Sharnlands

The Sharnlands is a mysterious expanse located on the eastern edge of the Lowerdark, characterized by its massive, luminescent crystals that illuminate the area. Home to the enigmatic Sharn, who exhibit both individual and hive mind traits, this region is a haven for exiles and refugees, with traces of numerous expeditions seeking its hidden wealth. The depths of the Sharnlands remain largely unexplored, with no known permanent settlements, yet it is one of the more accessible areas of the Underdark, thanks to the natural light provided by the crystals and the stability of its passages.

The Underdark

The Underdark

The Underdark is a vast, alien realm of darkness, filled with treacherous terrain, bioluminescent fungi, and ancient civilizations. It is home to powerful factions like the drow and mind flayers, as well as horrifying creatures adapted to its depths, making it a perilous place for adventurers seeking lost treasures or forbidden knowledge.

Throrgar Region

Throrgar Region

The Throrgar Region is a dark and foreboding expanse located beneath Baldur’s Gate and the eastern Cloakwood. It is characterized by massive eldritch castles inhabited by slaadi, demons, and other denizens of Cocytus, such as bugbears and lycanthropes, all thriving in the shadows of the Lowerdark. Miles above in the middle and upperdark levels Drow, Duergar, and Illithids clash in territorial disputes.

Waterdeep

Waterdeep

A bustling port city known for its rich culture, diverse population, and intricate political landscape. Waterdeep is a hub where merchants from across the realms gather to trade, adventurers seek fortune and glory, and secrets of magic and intrigue weave through the streets. The vibrant atmosphere is underscored by the sounds of the sea and lively marketplaces, while the grandeur of its architecture speaks to its long and storied history.

Zirnakaynin

Zirnakaynin

A vast city located in the Darklands, known for its ancient history and powerful magic. Located mostly in the mid level of the Underdark. Has plenty of access to water, food, and minerals which makes it wealthy, but also contested in matters of politics and war.

This work includes material taken from the System Reference Document 5.1 (“SRD 5.1”) by Wizards of the Coast LLC . The SRD 5.1 is licensed under the Creative Commons Attribution 4.0 International License.
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