The Sword Mountains

The Sword Mountains are a treacherous, frigid, and unforgiving mountain range located along the northern Sword Coast, separating the Phandalin Valley and The Mere of the Dead Men. Known for their sheer, snow-blasted, and snow-capped peaks, these mountains form a formidable barrier of untamed wilderness situated south of Neverwinter and near the frontier settlement of Phandalin. The peaks of this range cast a long shadow over the surrounding valleys, with unnatural, biting cold occasionally spreading outward into the lowlands.

Geography and Notable Locations

Snowmont Monastery

Perched high within the icy mountain passes, Snowmont Monastery was once a secluded sanctuary of contemplation. Reaching this remote haven requires navigating highly unstable bridges suspended over perilous chasms. Recently, the monastery was tragically devastated by a horde of Ice Trolls and Ice Mephits.

Word of the attack first reached the neighboring town of Phandalin via Clarissa, a brave survivor who traveled as fast as she could to seek aid. She guided a band of adventurers (who would become known as the Magnificent Five) up into the mountain pass. Despite their heroic efforts, the battle took a devastating toll. The monastery was left in ruins, and neither Clarissa nor the defender Dorian survived the onslaught.

Historical accounts differ regarding the exact identities of the only two monks to survive the tragedy. Some chronicles identify them as Jaque, a halfling man, and Zoe, a human woman. Other local records claim the survivors were Jackson, a halfling man, and Caitlyn, an elf woman, both of whom silently followed their rescuers back to the safety of Phandalin. Before departing, the surviving monks gifted their saviors the remaining treasures of the monastery’s trove: a Pearl of Power, a Staff of Frost, and a Wind Fan. A few days later, the survivors traveled further south to seek a new monastery.

Axeholm

Nestled against the mountainside “like a clenched fist,” Axeholm is an ancient dwarven fortress carved into the Sword Mountains by the dwarves of Phandelver’s Pact. Established a thousand years ago under the tripartite alliance of King Phandelver II of Highthorn, Queen Kima of Axeholm, and Archmage Larellion of the Hand of Sehahine, Axeholm stood as a proud testament to dwarven craft and military might, forging blades that could cut through spirit and spell alike. According to Elminster Aumar’s historical accounts in The Rise and Fall of the Pact of Phandelver, this tripartite accord was a fusion of art, knowledge, and labor where human pageantry stitched the seams between stone and song.

The fortress fell into ruin due to the ambition and spite of Vyldara Sehahine, Larellion’s daughter. Jealous of her sister Agatha—the celebrated “Moonlit Prodigy”—Vyldara sought to prove her superiority by seizing Axeholm. Entering as an emissary, she poisoned the kind Queen Kima with a slow, agonizing venom and fomented civil war. Though the dwarves captured her, she attempted a violent escape, slaying six dwarven guards before she was cut down. Denied passage by Sehanine and abandoned by her father, she rose as a tormented banshee, turning the remaining residents into shadows and forcing the sudden abandonment of Axeholm, which fractured the Pact of Phandelver.

For centuries, its grand granite halls lay haunted until the Magnificent Five, accompanied by the resurrected dwarven berserker Gotrek (who had been petrified for a millennium) and the fey goat sorceress Aja, cleared the fortress. Upon their arrival, Aja used her lightning magic to blast the massive rusted doors open. Inside, they were immediately ambushed by malevolent shadows. When the paladin Gilmore shouted to Vyldara that her sister Agatha had sent them, she was thrown into a violent rage, unleashing a banshee’s wail that knocked nearly the entire party unconscious, leaving only Erevyn and Gotrek standing.

Through desperate diplomacy and eventual martial confrontation, Gilmore severed her connection to the Material Plane. In her final moments, Vyldara expressed deep remorse, forgave her father, asked her sister for redemption, and blessed Erevyn as “blood of my blood.” Her soul was guided to Selûne’s embrace by the Matron of Ravens, leaving Axeholm finally at peace, with Gotrek hoping to oversee its eventual rebuilding. Before leaving, Gotrek gifted his ancestral Berserker’s Axe to the party, which was later purified of its curse at Tristan Manor by Farwald and the gnome scholar Dusty.

Gnomengarde

Deep within the mountain caves lies Gnomengarde, a cheerful settlement of gnomish inventors, craftspeople, and academics who create magical items and clever contraptions. The Magnificent Five visited Gnomengarde seeking aid against the white dragon. However, they found the settlement paralyzed by fear; King Korboz had grown mad with paranoia, tying up his beloved co-ruler King Gnerki to protect him from “faceshifters.”

Due to the unique environmental properties of Gnomengarde’s caves, the magical Weave in this area causes unpredictable side effects for any spells cast. The gnomes here also live in a close symbiosis with a nearby colony of Myconids and bioluminescent mushrooms beyond the waterfall. During their visit, the adventurers discovered that two shape-shifting doppelgangers had infiltrated the caves, one of whom was disguised as a welcoming gnomish hostess. A battle erupted in King Korboz’s throne room, during which Nalini was severely injured and Farwald was temporarily turned against his allies under a doppelganger’s suggestion. The party succeeded in killing one doppelganger, while the second escaped into the depths. King Korboz, freed and deeply grateful, offered the party a significant discount on Gnomengarde’s artifacts and inventions, including those designed by local inventors Dimblestib and Dabbledob.

Wave Echo Cave and the Forge of Spells

Wave Echo Cave is an ancient, sprawling cavern network deep within the Sword Mountains, home to the legendary Forge of Spells. Established during the Age of Arcanum by the Pact of Phandelver, the site fell into ruin during an ancient cataclysm. Recently, the dark elf Nezznar, known as “The Spider”—who had transformed into a monstrous Drider—occupied the caves. Defiling the ancient altar of Moradin the All-Hammer into a shrine to the Spider Queen Lolth, Nezznar imprisoned and tortured the gnomish academic Dusty for the secrets of the forge.

The Magnificent Five routed Nezznar’s forces and slew the Drider. With Dusty’s aid, they activated Gond’s Smelter—an intricate furnace requiring blue-burning wood found locally in the caves, local ore, the “Mettle of the Dwarves,” the “Ingenuity of the Humans,” and “Elvish Tears” (deduced by Nalini to be the casting of a Moonbeam spell, channeling the grace of Selûne). This opened the final chamber of the Forge of Spells. Gond was not actually a deity, but a legendary master craftsman and blacksmith of the Age of Arcanum. To protect his creations, he constructed “The Blacksmith” (also known as the Guardian of the Forge), a massive metallic construct standing larger than a giant, powered by two gemstone eyes—one red and one green. The adventurers successfully bypassed this guardian to claim powerful relics from the Age of Arcanum, including the Plate of the Pact, Cabal’s Ruin, the Circlet of Larellion, Nolzur’s Magnificent Pigments, and a legendary Deck of Many Things.

Threats and Ecology

The upper reaches of the Sword Mountains are home to frost-adapted monstrosities, including Ice Trolls and Ice Mephits. However, the most chilling threat to the region is Cryovain, also known as “Cryovain the Everfrost.”

Cryovain is an ancient, serpentine white dragon with scales like jagged ice plates. The deep, bass-like thumping of his massive wings beats the wind like war drums, casting a literal and metaphorical shadow over the range, plunging temperatures to absolute freezing, and bringing devastating flurries in his wake.

Three centuries ago, during the great dragon wars, Cryovain and his chromatic brethren (including Virethas the Jade Queen, Skaldreth the Red Rage, Barakis the Sandstorm, and Nocturne the Dread Prince) ravaged the Sword Coast. Driven back by the Lord’s Alliance and a legendary band of heroes—including Elminster Aumar, Lady Tanager Alagondar, Hrothgar Hillsfar, Esfaloth Nightbreeze, Gorion, Kiara Shadowbreaker, and Uther Vendrock—the dragons were scattered. The heroes utilized five powerful Dragon Masks, which allowed them to influence and control the minds of the chromatic dragons. While the other dragons dispersed, Cryovain was magically entombed within the empty grave of the Firbolg hero Hrothgar Hillsfar (who later lived as Farwald with his memories sealed by Elminster’s magic) in the Throat of the World mountains near Kuldahar.

Recently, Cryovain broke free from his tomb. Realizing his ancient captor Hrothgar was seemingly gone, Cryovain fled south to the highest peaks of the Sword Mountains. Driven by an ancient desire to freeze the world, he actively seeks allies for his frozen conquest. Unnatural cold continues to bleed from the peaks across the Phandalin Valley, though local mycelium network observations indicate its spread has temporarily slowed.