The Curse Of Oak Island Season 12 Episode 11: Swamp and Vault of Spanish Silver Hidden
Oak Island’s Greatest Discovery? The Copper Plate That Could Rewrite History
The Mystery of Oak Island
Imagine standing on an island where whispers of lost treasure have echoed for over 230 years. An island where fortune seekers, historians, and adventurers have risked everything to uncover the secrets buried beneath its surface.
Oak Island—arguably one of the most mysterious places on Earth.
Now, what if I told you that a newly discovered copper plate found deep in the earth of Lot 5 could be the key to unlocking a centuries-old mystery? Could it be evidence that Spanish silver, once part of a legendary treasure, was secretly transported to this very island and hidden in an underground vault?
In The Curse of Oak Island Season 12, Episode 11, the team stumbles upon a series of astonishing discoveries—each one bringing them closer to solving a riddle that has baffled treasure hunters for generations. Buckle up because we’re diving deep into what could be one of the most game-changing moments in Oak Island history.
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The Copper Plate: A Clue from the Past?
It all began with a seemingly ordinary find—a copper plate, unearthed from a round feature on Lot 5. At first glance, it appeared unremarkable, but as we all know, nothing on Oak Island is ever “just a piece of metal.”
Scientific Analysis Reveals a Shocking Truth
Expert metallurgist Emma Culligan subjected the artifact to rigorous testing using:
- SkyScan 1273 CT Scanner – To examine its internal structure.
- X-ray Fluorescent Spectrometer – To analyze its elemental composition.
The results? Absolutely jaw-dropping. The plate contained a mix of:
- Copper
- Zinc
- Iron
- Lead
- Arsenic – The most intriguing element.
Why Is Arsenic Important?
Arsenic was commonly used in alloys during the 1600s, a practice that faded out by the 1700s. This suggests that the artifact could predate the infamous Money Pit by more than a century.
This revelation sent shockwaves through the team. Could this copper plate be a remnant of an early expedition to the island? And if so, was it connected to one of history’s most enigmatic figures—Sir William Phips?
The Sir William Phips Connection: A Stolen Spanish Treasure?
Sir William Phips, an English naval captain and politician, might hold the key to this entire mystery.
The Lost Treasure of the Nuestra Señora de la Concepción
In 1687, Phips successfully salvaged 34 tons of silver, gold, and jewels from the sunken Spanish treasure ship Nuestra Señora de la Concepción. This ship had been lost off the coast of the Dominican Republic in 1641, carrying over 100 tons of valuable cargo.
But here’s where things get interesting.
When Phips returned for a second salvage mission, this time with the help of Freemason Captain Andrew Belcher, something strange happened.
Although he was expected to deliver another massive haul of treasure, he mysteriously returned with only five additional tons.
So where did the rest of it go?

Could Oak Island Be the Secret Hiding Place?
Some researchers believe Phips and his inner circle smuggled a portion of the treasure to a hidden location. And what better place than a remote, uncharted island in Nova Scotia?
Could this explain the mysterious structures on Lot 5?
Did Phips and Belcher hide Spanish treasure on Oak Island, constructing vaults and tunnels to protect their newfound wealth?
The evidence is piling up, and the team is on a mission to find the smoking gun.
The Swamp: Another Key Piece of the Puzzle?
If history has taught us anything about Oak Island, it’s that everything seems to lead back to the swamp.
During their excavation near a vault-like structure in the northern region of the swamp, just 20 feet from an empty chamber, the team made another astonishing find—pottery.
How Does Pottery Connect to Spanish Silver?
At first, pottery might not seem significant, but this wasn’t just any pottery. It had distinctive blue glazing, a technique often associated with European craftsmanship from the 17th and 18th centuries.
Even more shocking? The site where this pottery was found is directly linked to Anthony Graves, a 19th-century Oak Island landowner rumored to have discovered Spanish silver hidden in the area.
Does This Mean a Treasure Vault Still Exists?
The team believes they might be on the verge of uncovering what they’ve been searching for all these years—a hidden pathway leading to a buried cache of Spanish silver.
The Money Pit: Is the Treasure Finally Within Reach?
Meanwhile, things are heating up fast at the legendary Money Pit.
Time for the “Big Guns” – The Casing Operation
Rick and Marty Lagina, along with Craig Tester and the rest of the crew, gathered in the War Room for one of the most critical meetings of the season.
The big question: Is it time to bring in the caissons?
If you’re unfamiliar with caissons, they are massive steel cylinders, 7 feet in diameter, drilled deep into the ground to allow for large-scale excavation.
This is a multi-million dollar decision—but why now?
Game-Changing Evidence Below the Surface
Recent drilling has revealed:
- Large wooden structures buried at depths of 150 feet – Possibly previously undocumented tunnels.
- Anomalous concentrations of gold in soil samples – Right near one of their best drill targets.
If these tunnels and structures truly connect to the original Money Pit, the team could be just feet away from finally uncovering the legendary treasure vault.
The Decision: The Caissons Are Coming!
With excitement at an all-time high, the decision was made:
➡️ The caissons are being deployed!
This means we are closer than ever to uncovering the true secrets of Oak Island.
What Could Be Buried Beneath Oak Island?
So, where does all of this lead?
- A copper plate possibly dating back to the 1600s.
- A mysterious connection to treasure hunter Sir William Phips.
- A potential vault hidden beneath the swamp.
- Drill evidence suggesting tunnels and hidden chambers beneath the Money Pit.
All of this points to one inevitable conclusion:
➡️ Something of great significance is buried beneath Oak Island.
And we are closer than ever to uncovering it.
Could It Be:
✔️ The lost silver of the Nuestra Señora de la Concepción?
✔️ A hidden Freemason cache?
✔️ Or perhaps something even more shocking?
One thing is certain: The adventure is far from over.
The Biggest Revelation Still Awaits
As we stand on the brink of what could be Oak Island’s greatest discovery, we must ask:
What if this isn’t just about silver and gold?
What if the discoveries on Lot 5, the swamp, and the Money Pit are all connected to something far bigger than hidden treasure?
With caissons arriving, the excavation is about to shift into high gear. This could be the moment fans have been waiting for—the moment the legend becomes reality.
Will the team finally unearth the fabled vault?
Or will Oak Island, as it has for centuries, keep its secrets buried just a little while longer?
One thing’s for sure:
📢 Stay tuned, treasure hunters, because the best may still be yet to come! 🏴☠️🔥








