Original subtitles

Tonight, on the Curse of Oak Island. Ooh!

Look at that tip. This is almost weapon-like. Wow.

Going down? We have to have a look. It's H8, so we're going to run sonar down

there. See that now? That is a clear right angle. Is it possible that you're

at the side of a rather large cabin? Yeah.

It's a coin!

There's no design I've ever seen. We found a previously unrecorded structure.

It could be. It's incredibly old.

It's concrete.

The Romans, I thought.

there is an island in the north atlantic where people have been looking for an

incredible treasure for more than two hundred years so far they have found a

stone slab with strange symbols carved into it mysterious fragments of human

bone and a lead cross whose origin may stretch back to the days of the knights

templar to date Six men have died trying to solve the mystery.

And according to legend, one more will have to die before the treasure

can be found.

It is another new and exciting day on Oak Island.

I've always thought...

H8 is the money pit. Do you believe that's possible, Craig?

Absolutely.

Brothers Rick and Marty Lagina, along with their partner, Craig Tester,

continue to make progress, not only in their quest to locate the original money

pit, but in the excavation of other places on the island where treasure

might be buried.

Last week, while searching Smith's Cove for the remains of the stone box drinks,

that have long been believed to feed seawater deep into the money pit.

The timber right there.

Wow. Rick and the team uncovered a series of notched wooden beams.

Kind of signifies there's quite a load.

Quite a load expected.

Beams which could have been used as part of an ancient slipway that was first

discovered by Oak Island treasure hunter Gilbert Hedden in 1936.

so far in addition to finding the slipway the team has also unearthed what

appears to be a portion of one of the legendary box drains the mysterious u

and l shaped structures that were previously discovered by dan blankenship

in the 1970s and the remains of what appears to be a wooden wall

smith's cove is yielding structure after structure after structure most of it

unknown clearly there were massive efforts by searchers and maybe by

original people over 200 years two centuries yeah and even before the

discovery of the money pit so a lot of people believed that they were doing

something substantive i'll tell you what i'm most excited about but it's been a

long hard slog out here this excavation at smith's cove and everything finally

we're back to digging you know i mean everything's in place we're back to

digging absolutely today

Before heading over to Smith's Cove, Marty, Rick, and Craig begin their day

at the place where they may be finally closing in on the team's most important

and elusive target, the original Money Pit treasure shaft.

Marty strongly believes it is located very near the exploratory borehole they

dug last year, H8.

It was at this same location. I got something to show you.

where the team discovered evidence of everything from antique pottery, pieces

of parchment, and bits of bookbinding, to fragments of centuries-old human

bones.

I was firmly convinced at the beginning of this year that we needed to dig the H

-8 and see if we can capture some of the material we missed last year.

It's irrefutable that the most interesting finds in the money pit have

come up from H-8.

Are we just starting to grab? What's going on? We've been grabbing for about

an hour. Okay. We got a foot and a half.

We're dancing around 195 again, same that we were at last year. It's starting

to get hard, and we're just getting a little biteful, so.

What do you get?

Mud, a little bit of granite. Granite.

Getting some pretty good granite slabs.

Maybe this was the plug that started pushing everything down.

Last year, while trying to excavate the HH shaft, the team noticed that the

drilling caisson had hit something.

which could have been the legendary Chapel Vault, the seven-foot-tall wooden

chest which was first identified by treasure hunters William Chapel and

Frederick Blair back in 1897.

Right now, we're definitely sitting on something. It feels like I'm on a whole

bunch of wood at once.

Unfortunately, just as the team was making progress, an object that they

thought might be the Chapel Vault was pushed farther down into the mud and

sediment. Something was in front of the can and we were pushing it for a while.

Now, before this year's dig operation can resume, the team from Irving

Equipment Limited must first scoop out several feet of sediment and debris that

has settled at the bottom of their most promising target site, borehole H8.

Right now what we're dealing with is a big steel cylinder with a plug in the

bottom. So if we can't hammer the plug out, we certainly aren't going to get

anything new in there.

Vanessa, is there any reason why we can't start trying to rotate right now

and break that seal?

I would love your blessing to start oscillating.

I don't see why we wouldn't. Neither.

Yeah. That might even help the plug, too, if we start moving that can.

Yeah. I'll have Dan fire up the oscillator.

Okay. Fantastic.

Thank you. Hey, Dan, I got the blessing. Let's start twisting that can and try to

break it free.

Let's fire up the oscillator.

Using the massive oscillator, the team will now slightly lift the steel caisson

in borehole H8 in an effort to break up the plug at the bottom of the shaft.

It's catching on something.

There it goes.

Looks great.

Knock on wood that it keeps going.

Even now as you're rotating, it's trying to pick up.

Yeah, it's definitely got pressure.

We're going to keep going slow, but it's moving.

He's lifting up.

I hope it will break through here soon.

It's going to be slow at first. It's going to take a minute to wiggle it out,

but I'm happy.

It'll come out.

Maybe we'll get out of here this year where we didn't last.

As Marty and Craig continue to supervise the operation at the money pit,

Rick Lagina has joined geologist Terry Matheson and archaeologist Laird Niven

as they continue the team's massive excavation of Smith's Cove.

That's a rock.

It never lets up, does it? No.

There's a log across the bottom.

There's two of them going here and there. Cross pieces?

Yeah.

This is probably part of the old structure. Yeah.

so we have the slipway on top of the slipway evidence of an ancient slipway

at smith's cove is both exciting and confusing if as rick and members of the

team suspect it was built in order to haul ships out of the water and onto the

shore was it to repair damage or for some other reason and

was it put here by searchers sometime after the money pit was first discovered

in seventeen ninety five or was it constructed earlier perhaps by

depositors who buried something of incredible value here on the island

hundreds of years ago they are consistent

all across here yeah those are nice and tight and the same thing that you have

lard i've got one here One here, one here, one here, one there. Yep.

It's certainly packed in here. Oh, yeah. Yeah, so tightly packed.

This must be a rebuild over an older one. Yeah, that's what I was thinking.

This slipway, you know, people are slipping, moving, pulling boats ashore.

Hard to believe that something shouldn't be in here waiting for us.

Hard to believe there isn't.

As Rick and the team continue to expose more and more of the mysterious slipway,

Tons of excavated earth and materials have been taken over to the massive wash

plant located nearby, where they will be cleaned and sorted according to size.

Hey, Gary.

Wow, you guys work fast.

We got Rick on the job here. Things happen pretty quick.

Has the lid found anything in the slipway? Anything more?

Just glass, you know, relatively fresh glass.

Have a go.

Okay, mate.

I'll use no discrimination. We want to dig everything, don't we?

Yep.

No, nothing in there, Rick.

I've got a tag at your lid.

Here you go, mate.

Holy crap.

Look at it. This is almost weapon-like.

Look at that tip.

While investigating the remains of a possible ancient dock and slipway at

Smith's Cove, metal detection expert Gary Drayton has just made what could be

the team's first significant discovery of the day. Look at that tip.

that's almost like a arrowhead like the crossbow almost looks like a roman

peeling it's wrought iron a crossbow bolt

earlier this year while searching for artifacts on the island's southwest

shore look at this jack begley gary drayton and geophysicist mike west

discovered a strikingly similar metal object that looks like a crossbow

Further investigation, however, suggested that the object could not only

be much older... What it appears to be is Roman.

No way!

...but part of a tip from an ancient throwing spear known as a pilum, which

was used by soldiers of the Roman Empire as far back as the 1st century BC.

Looks like it was shaped that way, mate. Oh yeah, yeah.

i'm assuming it would have had a half like a handle yeah you're right that

looks like a tool or a weapon yeah cool no idea no idea ah

it's really cool

it's hand right oh

yeah point is on purpose look at the tip i don't know what to make of it so

certainly we're going to do scientific analysis

Is it possible this is part of that original work? Of course it's possible,

but I want an answer, a definitive answer.

It's not modern.

I don't know what to make of it. This is getting interesting.

Finds are coming up now.

See what else you can find.

Later that afternoon, Rick Lagina joins his brother Marty in the war room, where

they have gathered with members of their team.

to follow up on another recent and potentially historic find fellowship

members alex has been working with this stone that has the potentially strange

perhaps runic symbols on it okay it's just over here guys two weeks ago

gyro survey expert tory martin discovered an unusual stone slab while

assembling his equipment in the money pit area definitely not natural even

more intriguing was the strange inscription that appeared to be carved

on the rock surface.

After conducting a laser scan of the stone, the team met with representatives

from Azimuth Consulting Limited, who presented them with a stunning three

-dimensional computer model.

It revealed characters that Doug Kroll believed to be ancient runes. The

letters that make up the early Germanic alphabets used as far back as the second

century AD.

This is a very curious stone.

If this stone is authentic, historically, it's very important

because it would be some of the earliest proof of visitation, if not habitation,

in Nova Scotia by Europeans.

Alex phoned an expert, Dr.

Lila. Kopar?

Yeah. We've been looking for anybody who might be able to help us with this stone

and maybe tell us if there is or isn't an inscription.

So we can call her. Please do. Ask her a few questions and see what she thinks.

Hi, Dr. Kopar.

Hi, Alex.

Dr. Leila Kopar is the director of the Center for Medieval and Byzantine

Studies at the Catholic University of America in Washington, D.C.

She is also an expert in runology.

and has written extensively about early medieval iconography.

Nice to meet you all. Nice to meet you. Thank you for taking the time to talk

with us.

I've sent you a few details of this stone, but we don't know for sure

whether there is or is not an inscription.

And if there is, we don't know what it could possibly mean.

So that's why we're calling you today.

My pleasure.

I have a first question. Have you seen images at all of this stone we have?

I did see a few images, yes.

Okay, do you think it's worth a closer examination based on that?

It's certainly very interesting.

It is unusual because of that relatively straight line in the middle and the

incisions on it.

This might be an inscription, but I need to look at it a bit closer and hear a

bit more about the context.

So what I would really need is as many close-ups of the inscription as you can

send me and images of all sides of the object.

It's important to see all aspects of it if you want to know something about the

object because the inscription often has something to do with the function.

We did some measuring of the stone. We did build sort of a 3D model of the

stone that we might be able to send you.

That'd be great. What's relevant is the find context. So where exactly was it

found? Are there any other objects nearby that may relate to this?

This has all something to do with what it could be.

The confusing thing about this stone in particular is that it was in place and

we never noticed it, to be honest with you. It was sitting above ground.

It was next to a well that had been used by searchers over the decades, if not

centuries. It's in close proximity to the money pit, but we don't know if it

came from underground or not.

It's an extremely flat surface, as though it's been manipulated in order to

achieve the raised carvings.

Its context, it's been lost in the mists of time, so to speak.

I think we understand the task. Let us pull all that data together and let's

see what you come up with.

I'm excited about it.

Thank you. Very much looking forward to it.

So are we. Thank you. Thank you for helping us. Bye.

The next day. Good morning.

Morning, sir.

Rick Lagina and Craig Tester arrive at the Money Pit site.

They are eager to check on the progress of their renewed efforts to excavate the

HHF. the plug is out of the case and we have been pulling the can back up slowly

to see what's going on to see if we have any material coming in okay we are at

185 with the can okay so we have about a 10 foot open pilot hole you want to go

up higher or stay where we're at my suggestion would be pull up slowly

incrementally to 170-ish wait for the sonar introduce it okay That sounds

good. So we're going to run sonar then? Yes.

Hopefully there's a big cavity there or something.

Yeah. But so far, so good.

Sounds good. Okay.

Having broken through the compacted earth and materials at the bottom of the

shaft, the team from Irving Equipment Limited has made substantial progress in

their goal to raise the massive 50-inch wide caisson from a depth of 213 feet to

170 feet.

Once accomplished, they will be able to use the three-ton hammer grab tool to

excavate the contents of the hole for artifacts and hopefully treasure.

But before that happens, the Oak Island team has decided to first conduct a

sonar scan of H8 in the hopes of confirming the presence of an anomaly

that recent seismic scanning had suggested could be a large underground

void or chamber.

Gentlemen. Hey, Craig. Hi, Craig.

Assisting the team with today's sonar operation are Mike Roberts and Joey

Rolfe of DiveTech Limited.

We've got the small ROV with us, and on the ROV there's a scanning sonar.

I'm interested to see what we've got there, especially if there are some

voids or stuff. I'm sure we'll pick them up no problem with this sonar. Okay,

well, let's get after it. Yep.

Because H8 is filled with over 158 feet of water,

Mike and Joey will be using a remote-operated submersible vehicle,

otherwise known as an ROV.

Equipped with a Tritec Micron sonar, it will use sound waves to detect and

obtain images of any voids or objects within a range of 250 feet.

The ROV also features a high-definition camera, allowing the team... to monitor

a live video feed of today's operation just let me know when you're all clear

there and i can start lowering it in yeah roger we're all clear good to put

the rov down the can roger

any

problems just heading down right now okay joe

i'm uh gonna start uh Gonna leave surface now, okay?

Roger.

We're starting to get returns on the sonar.

At the Money Pit site, Rick Lagina, his nephew Alex, and Craig Tester, along

with representatives from DiveTech Limited, are just beginning a sonar scan

of the H8 shaft.

I'm just checking my settings, just adjusting the gain and stuff.

They are eager to obtain more precise imagery of a large underground anomaly

that was recently identified by seismic scanning.

An anomaly the team is hoping could actually be evidence of a large

underground treasure chamber.

OK, Joey, carrying on down.

Roger.

Using motorized propellers, operated remotely from the surface the sonar

equipped rov descends the 50 inch wide h8 steel caisson toward the soil and

possible void below it we're going to use every available technology that has

merit to help solve this mystery so we're going to run sonar down there if

there's a void if there's a chamber if there's something we penetrated or

pushed past we might be able to see it so maybe if we'll have something to

explore

So once we get out of the caisson, we should see that change from a hard

yellow to a softer return because the clay will be absorbing the sonar. Mike,

if there's a void or a tunnel or anything down there, what would we see?

We would just see an open, but no return.

There's no video now, it's just black water, so that's what I expected.

so we're down 20 meters now so we're just passing 60 feet just like to see it

bill yeah marty we're down nearly 38 meters okay

okay we're coming up to 42 meters we're coming on to 50 meters or 167

feet and that's going to be the bottom of the can let's get a scan right in

here okay joe coming to a stop just doing a scan

Roger that, Mike.

I'm waiting for Mike to have the aha moment. I'm waiting for him to say,

there, there's what you're looking for.

Try and get a dead center, you know?

It's amazing.

As you watch that little sweep go around, you're looking for the big

cavity to show up every time, every sweep.

Do you see that?

See the square corner?

It doesn't go around. It looks like it comes and then juts at an angle. See

that? There.

Let me go back to two meters.

There's something there.

I think so.

See that now? That is a clear right angle.

We can definitely see that's a 90-degree angle there.

It's almost perfect.

Can you go ahead and drive it forward? That'd be going straight up right on

this screen.

I'm going to go ahead a bit more.

And there's your angle, unless you're moving. I'm not moving.

That's a dandy there.

A right angle?

Could the team actually have found evidence of a man-made chamber located

some 170 feet deep underground?

Is it possible that you're at the site of a rather large cavity? That could be.

Angular features in nature are always interesting to look at because angles

usually are reflective of human intervention, some sort of human

construct. So there's a hope that it's in association with some sort of room or

cavity, void.

If a large void really does exist some 170 feet deep underground, has the Oak

Island team finally located the bottom of the original money pit? And if so,

could they be just moments away from locating the legendary chapel vault?

Uh-oh.

Doesn't seem right.

Got videos dropping off.

Yeah, roger that.

That's not good.

Okay, so I can't put auto depth on and my video's flickering for some reason.

Yeah, video's flickering really bad.

Yeah, we've lost sonar as well. No more power?

That is odd.

Everything started shutting down.

We got a comms loss alarm.

Okay, well, you may as well power down.

Kind of looks like that's some kind of massive brain failure going on to me.

It's just spreading all over the place.

Okay, Joel, just power it down.

Thank you.

Yeah, I don't want to leave power on just in case it is getting water in. The

chances of survival on this. Pull it and take a look at it. Yes, and if you think

it can be fixed real quick, let's go right back to where we want to be and

see if we get some data.

Okay, Joel, just pull her up, okay?

Roger.

Disappointing, it's not the correct verbiage, really. I mean, it's more than

disappointing. We're on the verge of possibly coming to an understanding of

what's below age eight.

And then the equipment fails.

And not under difficult conditions.

Designed for many times the depth.

It's one of those, it's Oak Island explanations.

The island hides its secrets well, doesn't it?

We were just poised above it. Yeah. Is that shocking?

Nope.

Although the ROV was built to withstand depths of up to 1,000 feet, it would not

be the first time that equipment suddenly and inexplicably failed on Oak

Island.

For the past two centuries, treasure hunters have reported bizarre equipment

failures, and usually at times when they believed they were close to a major

breakthrough.

Could this be another such occasion?

I think we all are somewhat used to Oak Island throwing us a curveball.

Mr. Blankenship encountered that during his years here.

Dunfield ran into the same thing.

It's almost like it's a living, breathing entity and it just refuses to

give up its secrets.

Okay, you're on surface here. I'm going to pull you out of the can.

Let's see if there's any water in this. Hopefully there isn't.

Did it flood?

Yeah.

It is flooded? Yeah.

That's not good. Yeah.

That does it for us then.

What are you thinking?

Big. Yeah.

Because it is Mike and Joey's assessment that the ROV has suffered serious water

damage, the Oak Island team will be forced to suspend today's sonar

operation.

Nevertheless, evidence that a large possibly man-made void exists at a depth

of 170 feet has made them more eager than ever to hammer grab the contents of

H8. Danny.

About time to do something, son. It's happy time for you. You get to do

something.

We would like to hammer grab you today, and we're running out of time, so...

Okay, clear it up. I appreciate it.

Unbelievable.

As the team from Irving Equipment Limited continues to hammer-grab the HH

shaft,

brothers Rick and Marty Lagina gather with members of their team in the war

room. Today should be one of those very interesting days. We have Dr.

Kopar again.

They are eager to hear a report on the mysterious stone carvings the team found

in the Money Pit area two weeks ago.

Hey, Dr. Kopar.

Hey, Alex.

How are you doing? Good, thank you. How are you? Good, thanks. Dr. Leila Kopar

is an associate professor of English at the Catholic University of America in

Washington, D.C.

I've got everybody here again.

And I appreciate that you reached out.

She is considered an expert on Norse mythology and medieval stone carvings,

including runology, the study of runes.

We're all really excited to hear if you're able to reach any conclusions

regarding the...

the maybe inscribed stone that we've been talking about?

Well, I spent some time with the stone. It's immensely interesting for a variety

of reasons.

You floated the idea that it might be runes, right?

Because runes are characterized by these nice straight lines.

The problem, however, is the way that this stone is inscribed.

If you incise runes, you either don't have any guidelines above or below the

characters.

Or if you do, as in Scandinavia, then you have it on both sides.

So the characters are between two lines, not just one side.

So that, to me, speaks against the fact that these can be runes. I could not

identify a single character that would be runic.

So my conclusion would be that these are not runes.

The reason why you all think that it's an inscribed stone, I think, because it

has that straight line in the middle and the incised characters that seem very

regular.

What indicates that it could be a script is the rhythm of the carving.

The next question is, what script are we dealing with?

So I started thinking, okay, what could it look like if it was script?

So there is a set of scripts in the high medieval period referred to as the

Gothic script.

And the rhythm of these characters or these markings on the stone reminds me

of this particular Gothic script.

It looks a little bit like an inscription in what's called Textualis

Rotunda.

They are widely used from the 12th to the 15th century, and they have a number

of different versions.

Gothic script?

first developed in Western Europe in the 12th century AD.

Gothic script was a popular writing style used in the Middle Ages for the

very difficult task of reproducing books by hand.

Known more commonly as black letter, the script was also widely utilized for

stone and metal inscriptions, such as those found on graves and in churches.

Could this stone, found near the money pit, really be inscribed with medieval

gothic writing it was interesting that she mentions the possibility of it being

gothic script because gothic script is somewhere between the 12th and 15th

century well that's an aha moment because the cross is believed to be from

the 1300s when she explained the dates associated with gothic script i think we

all went wow the other interesting feature is that it's like a little round

thing in the middle like a raised circle.

It would be atypical to see that as a marker to mark out different segments of

an inscription.

You don't use bumps or little round things for that normally.

The markings on it could be decorative so it would be worth looking whether

there is anything where you could use an architectural stone.

In architecture you do decorate stones often and for that you often use

rhythmic patterns just because they look pretty.

So my conclusion would be then it's probably architectural and the markings

on it are decorative.

The interesting thing about that is there's somebody on the island that has

the urge to create something that looks like something else because it's

relevant to them for whatever reason.

Okay.

The result I was hoping for was that she would say, oh, this is...

such and such language from such and such people that was used at such and

such time.

And here's what it says.

But what she did say, however, is that it was carved.

So at least we know we have a mysterious stone with strange carvings on it.

Well, I mean, it's good info. We know a lot more than when we started. Very

gratified to hear that at least you found it intriguing as well. That's

great. Oh, yes, I did.

We're going to follow these clues, and if we find something else, I think

you're going to see it.

Oh, yeah. Please get back to me. I'm really interested.

Bye-bye. Take care. Thank you. Bye.

Although, for now, the exact nature of the stone carvings remains a mystery,

Rick, Marty, and the team remain convinced that they could offer an

important clue in solving the Oak Island mystery.

I believe those are characters on that stone. I think we all think there's

something on the stone. Yeah.

This is a strange inscription.

I still think there's some information there.

Begs further research.

Right, yes.

Let's get back to work.

Sounds good to me. All right.

Another day begins on Oak Island.

And as the excavation of the mysterious slipway continues at Smith's Cove...

Dan? Rick Lagina, metal detection expert Gary Drayton, and Dan Henske arrive

at the Money Pit dig site.

What I'd like to do is go down there and see if we can't find the other part of

that stone.

Okay.

After learning that the large stone fragment they recently found in the area

could be inscribed with medieval writing, they are hoping that other

pieces of the mysterious artifact can be found nearby.

You're always looking for, Marty always refers to as more data.

Let's go have a look.

The stone is certainly broken, and it appears that there's more characters

that continue across the length of it. So that would be a significant find.

Find the other piece.

I'd say it's like that on that runic stone.

I think it was that type of stone. It should be fairly apparent.

Gary, make that sound that I love to hear.

And that's it right there.

I'll have a little search around.

OK.

As Rick and Dan search the area by eye, Gary scours it with this metal detector.

Although it won't alert him to the presence of anything made of stone, he

is hoping there might be equally interesting metal objects in the

vicinity.

Yeah, that one looks similar to the runestone with the moss on.

Two round.

It's two-way repeatable. I've no idea what it is.

It's not that deep. Six inches.

And it's just in that clump.

Just here.

Is that a pin coin?

Oh, there's something.

Oh,

I thought I saw a coin for a minute.

I did!

It's a coin!

Please be old.

Yeah, that is unusual.

I don't know.

There's like a webbing kind of design to it.

Yeah, there is.

There's no design I've ever seen.

Look at the top. I'm wondering if it's a token.

A token?

Dating back to the first century BC, bronze or copper tokens were used in the

Roman Empire as an alternative form of currency to gold and silver coins.

The use of tokens was also common among merchants selling and buying goods in

the Americas from the 17th to early 19th centuries.

Could this coin-like object, found on Lot 16, be an ancient token?

They haven't overlooked it.

If so, just how old could it be? And could it be connected to the carved

stone that the team also found in this area?

That is cool.

You're saying the more you see on it.

Mm-hmm.

Maybe something else in there. Oh, yeah.

And there's so much moss on these rocks, Rick.

That's the problem.

The rest of that stone could be anywhere.

Yeah.

Hello?

Hi, Rick, it's Laird.

Yeah, it's Laird.

What's up?

Um, we found a...

the unrecorded structure found in Smith Cove.

I think you should come down and take a look at it. Oh, well, previously

undocumented?

Yeah, it's quite a surprise.

I think you'll be interested.

Okay, we'll be down in a little minute.

Thank you, bye.

Wow, that sounds interesting.

All right, mate, I'll give you a call if we find anything. Okay.

Following an urgent phone call from archaeologist Laird Niven, Rick Lagina

arrives at Smith's Cove, where Laird and other members of the team have just made

what they believe to be a surprising discovery.

Hey, Laird.

It's not wood.

What is? It's concrete.

What in the world is that? I don't know.

I mean, it's certainly unrecorded. Yeah. How deep does it go? We don't know yet.

A bit of a surprise.

A bit?

A bit? You want to reconfigure that?

Yeah, I would say.

A concrete wall buried some eight feet beneath Smith's Cove.

There's a way to date concrete.

The Romans had concrete. Yeah.

The Romans had concrete that would set underwater.

This could easily be incredibly old.

known for such engineering marvels as the pantheon and the colosseum the

ancient romans were the first to develop and use poured concrete as far back as

the third century b c by mixing volcanic ash along with other rocks and minerals

they created a unique kind of hydraulic cement which actually hardened when

exposed to sea water it has long been theorized that this kind of advanced

engineering would have been required to build the intricate system of booby

-trapped flood tunnels on oak island there is absolutely no record of

anything like this in smith's cove so of course your mind goes to finally

something we absolutely are certain is original i mean it'd be very interesting

if this goes through this structure or underneath it then obviously

Whoever built this knew about this for sure. If it stopped short, then this

could be something entirely separate from that construction.

Yeah.

It's very strange. In order to pour this, this is underwater.

Exactly. Then this is three feet below grade, and then an additional three feet

underwater. I mean, this was not an easy build.

If you'd asked me what five things we might find in Smith's Cove...

10 things, 20 things, this would not be one of them. Concrete wall wasn't one of

them. Yeah. I said the only thing that would have surprised me more if it was

hot paint on us.

Dan Coffin would be on top of this. So there's no wonder that he didn't see

this or find it. Yeah.

And there's no mention in 1850 or 1860 or 66 of them using concrete.

We need to dig inside. Yeah. You know, respecting that integrity.

If whatever's here goes that way, then we do have to stop.

We've got to call the engineers, give them the specs of what we're doing, and

get an okay.

But I think one pull through here is fine.

Obviously, a pull through here is fine.

But any closer, it's an all-stop situation.

So let's kind of just scrape this and see what happens.

For Rick, Marty, and their team.

the discoveries they are making suggest that the origins of the oak island

mystery may date much earlier and be much more profound than the treasure

hunters before them ever suspected but as they continue to dig deeper both at

the money pit and at smith's cove what will they uncover a vault

filled with sacred treasure ancient waterways and architecture dating back

to roman times or will it be evidence of something even more astounding

something so forbidden that it had to be protected by a deadly curse

next time on the curse of oak island now it's time to see what's in

that hole this is part of the chapel vault

We know there are significant clues in HH. Charles, what's this? What do you

got? Looks like parchment to me.

Look at the red. That color was used in really old books. If you were in charge,

where do you look? I would look for an entrance that is now underwater because

I think there is one.

Hey, Rick? Yeah? We found something. Oh, man. What the hell could this be?