New Heat Map Technology Pinpoints Ancient Treasures on Oak Island — Could Lot 15 Hold the Missing Link?
The Curse of Oak Island: Team Unveils Heat Map of Ancient Discoveries — And Lot 15 Becomes the New Hot Zone
In the latest episode of The Curse of Oak Island Season 13, the team gathered inside the War Room to confront one of the most ambitious analytical projects ever attempted on the island: a comprehensive heat map of every significant artifact discovered across decades of searching. What the data revealed would send the team straight back into the field — with renewed energy, new theories, and a rising sense that the treasure mystery may be far more widespread than anyone imagined.
A New Tool in the Hunt: The Artifact Heat Map
At Rick, Marty, and Craig’s request, archaeologist Steve Guptill joined forces with Emma Culligan and Jillian to create a detailed heat map that categorized artifacts by their approximate age. Using color-coded markers, the map highlighted areas most likely to contain depositor activity — those who may have buried something of value centuries ago.
Steve presented the legend to the team:
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Pink — Artifacts dated before 1725, signaling a high likelihood of depositor activity.
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Orange — Items from the 1730s–1750s, still potentially linked to early, intentional activity.
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Green — Intermediate periods.
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Blue — More modern objects, typically associated with searchers from the 1800s onward.
The map produced two immediate “hot zones”: Lot 5, where the archaeologists have focused work this season, and the legendary Money Pit, the heart of Oak Island’s centuries-old mystery. But another location soon commanded attention.
Lot 15: A Cluster of Mysteries
As the team zoomed out to examine the entire map, Rick Lagina pointed to a curious cluster of pink and orange dots on the northern end of the island — specifically Lot 15, an area long known for producing some of Oak Island’s strangest and oldest finds.
Lot 15, located roughly 200 yards northwest of the Money Pit, has previously yielded:
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Burned charcoal possibly dating back to the 14th century,
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A Chinese coin potentially more than 1,000 years old,
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A piece of pre-17th-century Portuguese stoneshot traced back to the Azores.
Seeing these artifacts clustered together on the heat map clearly impressed the team. Craig Tester noted that even the orange markers pointed to the mid-1700s, still well within the window of possible depositor activity.
Rick agreed, suggesting the team return to Lot 15 immediately. Marty backed him. Billy Gerhardt, reviewing the map’s dense concentration of early-date artifacts, hinted: “We’ve barely scratched the surface.”
The message was clear: Lot 15 was calling them back.
Back in the Field: A Fresh Search Begins
Later that day, Rick, Gary Drayton, and Steve headed to Lot 15 armed with metal detectors and new hope. Before their arrival, Billy had plowed the area using a heavy tractor — a strategy borrowed from Gary’s years of metal detecting farmland in England. Turning over the soil brings deeper artifacts closer to the surface, increasing the odds of finding items that have lain buried for centuries.
Gary was optimistic.
“I’m expecting a good day,” he said as they began scanning the plowed ridges.
A Piece of Coal — And a Possible Connection to the Stone Road
The first significant signal came quickly. Gary knelt down and pulled out a piece of what appeared to be coal — lightweight, dark, and unlike anything expected in the natural landscape of Lot 15.
Coal, while ordinary today, carries major implications on Oak Island. Similar pieces had been discovered during excavation of the believed Portuguese stone-paved road in the swamp, a structure the team believes could date back centuries. If coal is turning up on Lot 15 as well, it suggests a compelling possibility: the area may be connected to the swamp features, perhaps by the same people who constructed the ancient roadway.
Gary bagged the find, promising to send it to Emma for testing.
A Rosehead Spike With 1500s Origins
Moments later, Gary’s detector hit again — harder this time. Digging through the fresh soil, he unearthed a heavily corroded iron spike with distinct hammered facets.
“A rosehead spike,” he announced.
Steve agreed.
These hand-forged nails were used across Europe and North America from the 1500s through the 1700s. Oak Island has produced many such spikes before — including a number found over 150 feet deep in the Money Pit, all carbon-dated prior to 1750.
The discovery strengthens a growing theory: Lot 15 and the Money Pit may share a common depositor or construction timeline.
Rick was thrilled. “This will be going on your heat map,” he told Steve.
A Pintle — And More Questions
The next find came minutes later: a pintle, a type of iron hinge or mounting pin used historically for hanging doors, gates — or lanterns. Gary noted it could even have been used in underground shafts to support lighting, hinting again at early mining or tunneling activity.
Every find deepened the mystery. Gary placed the pintle into a bag for testing, the team marking each spot with a flag.
The Hunt Intensifies
As they continued metal detecting across the hillside, the significance of Lot 15 became increasingly undeniable. Between the ancient stoneshot, the centuries-old charcoal, the Chinese coin, and now the spike, coal, and pintle, the area may hold one of the strongest connections yet between surface artifacts and the legendary Money Pit.
Rick summed up the team’s excitement:
“We are now convinced the mystery is island-wide. You go back to where you’ve had success before.”
With the heat map guiding them, Lot 15 is no longer just an intriguing side location — it has officially become the new epicenter of Oak Island’s most promising leads.
