Discover how to open the ornate clamp on the old diving bell in Hollow Knight: Silksong. Complete guide to finding Ballow, obtaining the Diving Bell Key, and accessing Act 3’s secret depths.
Deep within the industrial maze of Deep Docks in Hollow Knight: Silksong, few mysteries capture players’ attention quite like the old diving bell sealed with an ornate clamp. This isn’t just another locked door – it’s a gateway to one of Silksong’s most significant story revelations and your passage to the game’s most challenging depths.
The cryptic message “An old diving bell. Its door is shut tight by an ornate clamp” has frustrated countless explorers who stumble upon it during their Deep Docks adventures. What makes this discovery so compelling isn’t just its mysterious nature, but the realization that it represents something far more important than a simple locked container.
Understanding the Diving Bell’s True Purpose
More Than Meets the Eye

While the diving bell might initially seem like another optional secret or side content, it serves as a critical gateway in Silksong’s narrative structure. This isn’t treasure hunting – it’s story progression disguised as exploration mystery.
The ornate clamp isn’t just decorative security; it’s a narrative device that ensures players have progressed far enough in their journey to handle what lies beyond. By the time you can open it, you’ve proven your mastery of Silksong’s core systems and demonstrated commitment to understanding Pharloom’s deeper mysteries.
The Act 3 Connection
The diving bell’s connection to Act 3 isn’t coincidental. This secret chapter represents Silksong’s most challenging content, requiring players to have developed substantial skill and story understanding. The diving bell serves as both literal and metaphorical descent into the unknown.
Prerequisites: Preparing for Act 3 Access
Story Progression Requirements
Before you can even think about that ornate clamp, you’ll need to unlock Silksong’s hidden third act. This involves:
- Major questline completions across multiple regions
- Flea Caravan progression to unlock new story paths
- Character relationship development with key NPCs
- Substantial exploration proving your dedication to Pharloom’s secrets
The game doesn’t hand out Act 3 access lightly – you’ll need to demonstrate mastery of both combat and exploration systems while showing genuine investment in the world’s mysteries.
Deep Docks Familiarity
Since the diving bell is located in Deep Docks’ more remote sections, ensure you’re comfortable navigating this industrial labyrinth. If this is your first extensive Deep Docks exploration, expect to spend time learning the area’s layout and discovering efficient navigation routes.
Finding the Right NPCs: A Detailed Approach
Forge Daughter: The Misdirection That Leads to Truth
Your journey begins with Forge Daughter, identifiable by the vendor icon on your map. She’s surrounded by the tools of her trade in Deep Docks’ industrial heart, making her relatively easy to locate once you’re in the right area.
The Critical Conversation: When you speak to Forge Daughter about descending below Deep Docks, her response isn’t dismissive – it’s redirectional. She’s telling you that while she understands your need, she’s not the solution. This conversation serves as both exposition and puzzle hint.
Why This Design Choice Works: The Forge Daughter misdirection teaches players to pay attention to NPC networks and relationships. In Silksong, solutions often come from understanding who knows whom, not just finding the obvious answer.
Ballow: The Key to Your Descent
Location and Identification: Ballow works directly beside Forge Daughter, but he’s easy to overlook if you’re focused solely on obvious vendor interactions. He appears to be just another background worker until you understand his crucial role.
The Commitment Conversation: When Ballow agrees to help, he’s not just offering a service – he’s committing to a dangerous journey. His willingness to operate the diving bell reflects the gravity of what you’re attempting.
Navigation to the Bell: Ballow’s journey to the diving bell location serves as a test of your Deep Docks knowledge. If you’ve explored thoroughly, you’ll know shortcuts. If not, you’ll need to navigate the longer route, giving you time to appreciate the area’s industrial atmosphere.
The Diving Bell Experience: More Than Transportation
Interior Discovery
Inside the diving bell, you’ll find more than just functional elements:
The Bench: Your final checkpoint before descending into unknown dangers The Speaker: A communication device that adds atmospheric tension The Atmosphere: Industrial claustrophobia that builds anticipation
Pre-Descent Preparations
This is your last moment of relative safety before entering some of Silksong’s most challenging content. Consider:
- Health and resource management – ensure you’re at optimal levels
- Ability review – confirm you have essential skills like wall jumping mastered
- Mental preparation – the Abyss ahead will test every skill you’ve learned
The Descent Sequence
The actual dive isn’t just a loading screen – it’s a carefully crafted transition that builds tension while giving you time to process what you’re attempting. The mechanical sounds, Ballow’s commentary, and gradual environmental changes all contribute to the gravity of your descent.

Strategic Implications: Why This Matters
Story Progression Gateway
The diving bell isn’t optional side content – it’s a mandatory gateway for accessing Silksong’s most crucial story revelations. Understanding this helps frame your approach to Deep Docks exploration and NPC interactions.
Skill Validation Checkpoint
By requiring Act 3 access, the diving bell ensures you’ve demonstrated mastery of core gameplay systems. This isn’t gatekeeping – it’s ensuring you’re prepared for what lies ahead.
Narrative Significance
The diving bell represents Hornet’s commitment to understanding Pharloom’s corruption at its source. This isn’t just exploration; it’s heroic dedication to solving the kingdom’s crisis.
Common Misconceptions and Clarifications
“It’s Just Empty Space”
Some players dismiss the diving bell as underwhelming because it only contains a bench and speaker. This misses the point entirely – the bell’s value isn’t in treasure, but in access to transformative story content.
“I Can Skip This”
While technically true that you won’t miss items by avoiding the diving bell, you’ll miss some of Silksong’s most compelling narrative and mechanical content. The experiences beyond this point significantly enhance your understanding of the game’s world and systems.
“It’s Too Complicated”
The diving bell access requirements might seem complex, but they reflect natural story progression. If you’re engaging with Silksong’s world thoroughly, you’ll encounter these requirements organically.
Advanced Preparation Strategies
Resource Management
Before operating the diving bell, ensure you have:
- Maximum health upgrades through silk enhancement
- Essential abilities including advanced movement techniques
- Crafting materials for emergency tool creation
- Mental readiness for challenging navigation and combat
Ability Mastery Verification
The content beyond the diving bell assumes proficiency with:
- Advanced movement combinations including precise dash techniques
- Combat fundamentals like parrying and positioning
- Environmental navigation in challenging visibility conditions
- Resource conservation during extended exploration sequences
Post-Dive: What to Expect
Immediate Challenges
The area you reach via diving bell presents immediate navigation and survival challenges. Your first priority should be finding safe spaces and understanding the environmental hazards.
Long-term Implications
Successfully operating the diving bell marks a turning point in your Silksong journey. The skills and story revelations you gain from the subsequent content will fundamentally change how you approach the game.
Connection to Broader Systems
The diving bell experience integrates with multiple game systems – from Steel Soul mode considerations to advanced exploration techniques that unlock throughout your journey.
Tips for First-Time Deep Docks Explorers
Navigation Fundamentals
If Deep Docks feels overwhelming, focus on:
- Landmark recognition using distinctive industrial features
- Vertical layout understanding to avoid getting lost
- NPC location mapping to build familiarity with the area
- Safe space identification for rest and resource management
Building Towards Bell Access
Rather than rushing toward the diving bell, take time to:
- Complete available quests to build toward Act 3 requirements
- Explore thoroughly to understand Deep Docks’ full layout
- Develop relationships with NPCs who provide crucial information
- Master navigation so you can return efficiently when needed
Final Thoughts: Embracing the Journey
The ornate clamp on the old diving bell represents more than a locked door – it’s a symbol of Silksong’s design philosophy. The game rewards thorough exploration, story engagement, and skill development with access to transformative content.
When you finally sit on that bench inside the diving bell and speak to Ballow to begin your descent, you’re not just accessing new content – you’re demonstrating mastery of everything Silksong has taught you. The mechanical click of the ornate clamp opening marks the beginning of some of the game’s most memorable and challenging experiences.
For players following beginner progression paths, remember that reaching the diving bell represents significant achievement. You’ve navigated complex questlines, mastered challenging gameplay systems, and demonstrated the dedication necessary to uncover Pharloom’s deepest secrets.
The descent that follows will test everything you’ve learned, but it will also reward you with some of gaming’s most compelling atmospheric storytelling and mechanical challenges. Trust in your preparation, embrace the unknown, and prepare to discover what lies in the depths below.
Ready to begin your descent into Pharloom’s mysteries? Experience the full journey in Hollow Knight: Silksong on Steam, Nintendo Switch, PlayStation, or Xbox and unlock the secrets that await beneath the surface!