Mini-Dungeon #332: Stoneholme’s Sealed Gates

Mini-Dungeon #332: Stoneholme’s Sealed Gates

4–6 Characters • Levels 3–5

Underworld • Urban

This product is part of the Mini-Dungeons series — a collection of short, ready-to-run tabletop RPG adventures.

A fortress prepares to shut itself away from the world.

At the gates of Stoneholme, dweorg engineers ready ancient defenses while stone guardians stir to life. Outside, factions clash—envoys, refugees, and opportunists all demand entry as tensions spiral toward violence.

Then the tunnels erupt. Venomspawn flood from the depths, surging toward the gates in relentless waves. As Stoneholme moves to seal itself for a century, those left outside must choose: stand together against the swarm… or force their way through the city’s deadly defenses before the gates close forever.

Adventure Description

Designed as a high-tension encounter within Rise of the Drow: After the Fall, Mini-Dungeon #332: Stoneholme’s Sealed Gates presents a volatile 5E city gate encounter as a fortified dweorg city prepares to isolate itself from the Underworld.

Upon arrival, the party finds the gates nearly sealed and guarded by a hardened Stoneholme force under strict orders to deny entry. Around them, multiple factions collide—Embla dwarves seeking alliance, Klavekian emissaries demanding access, and drow refugees fleeing the fall of Holoth. Each group carries its own agenda, distrust, and breaking point.

Characters may attempt to mediate this fragile situation, navigating political tension, cultural hostility, and competing demands. Every effort to negotiate risks escalating the crowd, pushing it toward disorder, desperation, or outright violence.

The situation fractures when Venomspawn begin arriving in waves, attacking all gathered forces. As the threat intensifies, Stoneholme activates its defenses—ancestral guardians stir, arbalists fire from above, and the gate mechanism begins its final closure.

Caught between the swarm and the city’s defenses, the characters must act quickly—rally allies, defend civilians, or push through the trap-filled Gauntlet before the gates seal completely.

Ultimately, the outcome reshapes the balance of power across the Underworld. Stoneholme may seal itself away, join the Coalition, or determine the fate of the drow refugees—each decision carries lasting political consequences.

Why This Underworld Urban Crisis Is Different

Stoneholme’s Sealed Gates is built around faction tension, escalating pressure, and battlefield chaos.

In addition to traditional exploration, this adventure emphasizes:

• A multi-faction conflict with competing political agendas
• Crowd dynamics that evolve from negotiation to panic or violence
• Timed Venomspawn wave assaults that increase danger each hour
• Defensive battlefield elements including stone guardians and siege responses
• The Gauntlet, a deadly trap corridor designed to repel mass incursions
• Player-driven outcomes that shape future Underworld alliances
• The constant tension between diplomacy and survival under immediate threat

Underworld Campaign Integration

This adventure integrates directly into:

• Rise of the Drow: After the Fall
• Stoneholme and the Deepthunder Clan
• Holoth refugee fallout and Venomspawn incursions
• Underworld Coalition faction dynamics

It also functions independently as:

• A high-pressure urban defense scenario
• A faction-driven negotiation encounter under duress
• A wave-based survival combat experience
• A decision-driven one-shot with lasting consequences

Game Masters can position Stoneholme within any fortified dwarven settlement or adapt the factions to fit their campaign setting.

What’s Inside

This 5E 2024 Mini-Dungeon includes:

• A multi-faction standoff at a fortified city gate
• Crowd reaction escalation mechanics
• Timed Venomspawn wave encounters
• Multiple key NPCs with competing goals and secrets
• Stoneholme’s defensive systems, including guardians and arbalists
• The Gauntlet, a trap-filled defensive funnel
• Branching outcomes that reshape Underworld politics

Key Characters include:

• First Lieutenant Jorri Coldiron, a rigid gate commander enforcing isolation
• Sergeant Gromban Handzus, a diplomatic envoy seeking alliance
• Younker Alexander Pietrov, an ambitious emissary demanding entry
• Kristophine Popov, a devout agent hardened by conflict
• Bardrine, a former slave seeking power among the refugees
• Quare, a fearful noble desperate for survival

Stoneholme’s Sealed Gates works as:

• A faction-driven crisis within Rise of the Drow: After the Fall
• A high-tension negotiation encounter under pressure
• A wave-based survival and defense scenario
• A pivotal political turning point in the Underworld