Salazar Slytherin's Vision

When the four founders of Hogwarts began accepting students around 990 AD, Salazar Slytherin grew increasingly concerned about admitting Muggle-born students. He believed they couldn't be trusted with magical knowledge and that their presence endangered the wizarding world's secrecy.

The other founders—Godric Gryffindor, Helga Hufflepuff, and Rowena Ravenclaw—disagreed vehemently, believing magical ability transcended ancestry. This fundamental conflict led to a bitter falling out.

The Secret Construction

Before abandoning Hogwarts around 993 AD, Slytherin constructed a hidden chamber beneath the school without the other founders' knowledge. His purposes were threefold:

• Preserve Blood Purity: Create a weapon to "cleanse" the school of Muggle-borns
• Leave a Legacy: Ensure his ideals could be continued by a future heir
• Prove His Point: Demonstrate that Muggle-borns posed a danger to Hogwarts

The Chamber's construction required extraordinary magical skill. Slytherin managed to carve an enormous underground space, install complex protective enchantments, and conceal the entrance so thoroughly that even the greatest witches and wizards couldn't find it for a millennium.

The Entrance

Location: Second-floor girls' bathroom (out of order)

The entrance is concealed in a sink adorned with a small snake carved into the side of one of the copper taps. This snake serves as the lock—only someone speaking Parseltongue can command it to open.

Opening Command: "Open" in Parseltongue causes the sink to slide aside, revealing a large pipe entrance.

The Pipe System

From the bathroom, one must slide down an enormous pipe that drops several stories underground. The pipe:

• Slopes steeply downward at first, then levels into a slide
• Covered in slime, muck, and centuries of accumulated grime
• Branches into smaller pipes throughout the descent
• Eventually deposits travelers in a dark underground tunnel

The pipe system represents medieval magical plumbing—Slytherin used Hogwarts' underground waterways to conceal the Chamber's entrance and allow the Basilisk to move through the castle unseen.

The Underground Passage

After the pipe, visitors find themselves in a dark, damp stone tunnel. Key features:

• Rough stone walls slick with moisture
• Floor littered with small animal bones (rat skeletons)
• Low ceiling requiring one to crouch while walking
• Completely dark—wand light necessary
• Cold, with the smell of rot and decay

The Snake-Skin Chamber

The tunnel opens into a larger space where Harry and Ron discovered an enormous, bright green snake skin in 1993—the shed skin of the Basilisk, measuring over twenty feet long and glistening in the wandlight. This discovery confirmed a massive serpent lived in the Chamber.

The Main Door

At the tunnel's end stands an impressive circular door carved with seven intertwined serpents. The serpents have emeralds for eyes, giving them an eerie, glowing appearance in dim light. Like the bathroom entrance, this door opens only to Parseltongue commands.

When the command ("Open") is spoken in Parseltongue, the serpents slither apart, creating an opening large enough for a person to walk through.

Architectural Features

Dimensions and Scale

• Length: Extraordinarily long—described as being able to fit a cathedral
• Height: Ceiling lost in shadow, estimated at 60+ feet high
• Width: Wide enough for the Basilisk to move freely
• Overall Feel: Cavernous, echoing, oppressive atmosphere

Stone Serpent Pillars

The Chamber's most striking feature is two rows of enormous stone pillars, each carved in the shape of a coiled serpent. These pillars:

• Rise from floor to ceiling
• Feature intricate scale patterns carved into the stone
• Create a colonnade leading to the main area
• Cast menacing shadows in torchlight
• Symbolize Slytherin's house emblem and Parseltongue ability

The Statue of Salazar Slytherin

At the Chamber's far end stands a massive statue of Salazar Slytherin himself:

• Size: Reaches nearly to the ceiling, depicting Slytherin as a towering figure
• Material: Ancient gray stone, weathered but intact after a thousand years
• Appearance: Old, monkey-like face with a long, thin beard that reaches the statue's stone robes
• Expression: Stern, imperious, looking down on the Chamber
• The Mouth: Enormous, gaping mouth—the Basilisk's lair and entrance point

The Basilisk's Lair

The statue's open mouth conceals a dark tunnel leading deeper underground—the Basilisk's personal lair where it sleeps between summonings. This tunnel connects to the castle's pipe system, allowing the serpent to travel throughout Hogwarts.

The Basilisk's Purpose

Salazar Slytherin chose a Basilisk for several strategic reasons:

• Lethality: A Basilisk's gaze kills instantly—perfect for Slytherin's "cleansing" purpose
• Longevity: Basilisks can live for centuries if properly fed, ensuring the weapon would remain viable
• Control: Only a Parselmouth can command a Basilisk, ensuring only Slytherin's heir could wield it
• Symbolism: The ultimate serpent represented Slytherin's house and beliefs
• Secrecy: The Basilisk could travel through pipes, striking from anywhere in the castle

Physical Characteristics

• Length: Approximately 50-60 feet long (based on shed skin and descriptions)
• Color: Poisonous bright green with yellow eyes
• Venom: Extremely toxic, one of few substances that can destroy Horcruxes
• Killing Stare: Anyone who looks directly into its eyes dies instantly
• Lifespan: This particular Basilisk lived for over 1,000 years (c. 993 - 1993)

Feeding the Beast

A mystery surrounding the Chamber is how the Basilisk survived for a millennium. Possible explanations:

• Basilisks can survive extended periods without food
• It hunted rats and other creatures in Hogwarts' pipe system
• Magical sustenance from the Chamber itself
• Tom Riddle may have fed it during his two periods of control (1943, 1993)

First Opening: 1943

Who: Tom Marvolo Riddle (later Lord Voldemort), a sixth-year Slytherin student

Discovery: Riddle discovered he was Slytherin's heir through his ability to speak Parseltongue. Obsessed with his heritage and eager to prove his superiority, he spent years searching for the Chamber.

Events of 1943:

• Riddle opened the Chamber during his fifth year at Hogwarts
• Released the Basilisk to attack Muggle-born students
• Multiple students were Petrified (saw the Basilisk's reflection or through ghosts)
• Myrtle Warren (later Moaning Myrtle) was killed—the only fatality
• Myrtle died in the bathroom that would later hide the entrance
• Headmaster Armando Dippet threatened to close Hogwarts
• Riddle framed Rubeus Hagrid, claiming Hagrid's pet Acromantula was responsible
• Riddle received an Award for Special Services to the School for "solving" the mystery

Aftermath: The Chamber was resealed, and Riddle graduated with his secret intact. Hagrid was expelled but allowed to stay as gamekeeper. The truth remained hidden for fifty years.

Second Opening: 1992-1993

Who: Ginny Weasley, possessed by Tom Riddle's memory preserved in a diary Horcrux

How It Happened:

• Lucius Malfoy secretly placed Riddle's diary in Ginny Weasley's schoolbooks
• Ginny, lonely and troubled, began writing in the diary
• Riddle's memory possessing the diary manipulated Ginny, gradually taking control
• Under Riddle's control, Ginny opened the Chamber and released the Basilisk
• She painted threatening messages: "THE CHAMBER OF SECRETS HAS BEEN OPENED. ENEMIES OF THE HEIR, BEWARE"

Attacks During 1992-1993:

Why No Deaths? All victims saw the Basilisk indirectly—through reflections, cameras, or ghosts. Direct eye contact would have been instantly fatal.

Harry's Descent

The Journey:

• Harry discovered the Chamber's entrance through Moaning Myrtle, who revealed she died there in 1943
• He, Ron, and Gilderoy Lockhart descended the pipes
• A cave-in separated Harry from the others—he proceeded alone
• Used Parseltongue to open the serpent door
• Found Ginny unconscious at the base of Slytherin's statue

The Battle

Tom Riddle's Memory

The sixteen-year-old memory of Tom Riddle emerged from the diary, growing more solid as he drained Ginny's life force. He revealed:

• His true identity as Lord Voldemort
• How he manipulated Ginny through the diary
• His plan to drain Ginny's life to restore his own physical form
• His Parseltongue ability and connection to Slytherin

The Basilisk Emerges

Riddle summoned the Basilisk from the statue's mouth. The enormous serpent, starved and enraged, attacked Harry. The battle that followed:

• Harry kept his eyes closed to avoid the killing stare
• Fawkes (Dumbledore's phoenix) arrived and pecked out the Basilisk's eyes
• Fawkes also brought the Sorting Hat
• The Sword of Gryffindor emerged from the Hat
• Harry pulled the sword and drove it through the Basilisk's mouth into its brain
• A Basilisk fang pierced Harry's arm, poisoning him with deadly venom
• Fawkes healed Harry with phoenix tears (one of the few antidotes to Basilisk venom)

Destroying the Horcrux

Harry used the broken Basilisk fang to stab the diary, unknowingly destroying one of Voldemort's Horcruxes. The diary:

• Screamed and spurted ink like blood
• Riddle's memory writhed and vanished
• Ginny immediately regained consciousness
• The Chamber's dark magic began to fade

"You'll find I'm very forgiving, Lord Voldemort. After all, you've been inside me for hours now. I know that a part of you lives within me. I'm willing to keep your secret. But if you try anything, I swear I'll tell everyone. And then we'll see who the real heir of Slytherin is." — Harry Potter's bluff to Riddle's memory

Immediate Aftermath (1993)

• The Basilisk was dead, its body left in the Chamber
• Riddle's diary was destroyed (first Horcrux destroyed unknowingly)
• All Petrified victims were revived using Mandrake Restorative Draught
• Ginny was traumatized but physically unharmed
• Hagrid's name was cleared of the 1943 accusations
• Lockhart's memory was permanently damaged from a backfired spell

Return Visit (1998)

During the Battle of Hogwarts in 1998, Hermione and Ron returned to the Chamber to retrieve Basilisk fangs—one of the few substances capable of destroying Horcruxes:

• Ron spoke Parseltongue by imitating Harry's sounds to open the Chamber
• They collected fangs from the dead Basilisk's skeleton
• Hermione used a fang to destroy Helga Hufflepuff's Cup (another Horcrux)
• This was Hermione's first visit to the Chamber
• The Chamber was left open during this visit

Final Destruction (1998)

During the Battle of Hogwarts, the Chamber suffered significant structural damage:

• Parts of the castle above collapsed into the Chamber
• Flooding from broken pipes
• Magical fires and explosions damaged the architecture
• The serpent door was partially destroyed
• After the battle, the Chamber was sealed permanently

Post-War Status

After Voldemort's defeat and Hogwarts' reconstruction:

• The Chamber entrance was magically sealed by new Headmistress McGonagall
• Additional protective enchantments were added
• The bathroom was renovated but the sink entrance was preserved as historical record
• Access is now restricted to Headmasters/Headmistresses only
• The Chamber serves as a reminder of Slytherin's darker legacy and the dangers of blood purity ideology

Blood Purity and Prejudice

The Chamber's entire purpose was to eliminate Muggle-borns from Hogwarts, making it a physical manifestation of blood prejudice. Its existence proves that bigotry can leave lasting, dangerous legacies.

Secrets and Hidden Dangers

The Chamber remained hidden for a thousand years, demonstrating how buried secrets can resurface with devastating consequences. Its concealment also shows how even institutions as revered as Hogwarts harbor dark histories.

Heritage vs. Choice

While Tom Riddle and Harry Potter both descended from Slytherin (through the Gaunt and Peverell family connections), their choices defined them differently. Riddle embraced Slytherin's bigotry; Harry rejected it, choosing to befriend Muggle-borns like Hermione.

Weapons Can Be Turned Against Their Creators

Slytherin built the Chamber to attack Muggle-borns, but Basilisk venom ultimately helped destroy Voldemort's Horcruxes—weapons of immortality created by Slytherin's heir. Hermione, a Muggle-born, used Slytherin's own weapon against his descendant's evil plans.

🐍 A Thousand-Year Secret

Hidden beneath Hogwarts for a millennium, the Chamber of Secrets stands as testament to both the dangers of prejudice and the courage of those who fight against it. Slytherin built it to destroy; Harry, Hermione, and Ron used it to save.