S13E18: Breaking the Seal
After raising the 40,000-pound boulder from Lot 8, the team is astonished to find a manmade feature that may be hiding a shaft or tunnel.
Previous Episode 
Season 1
What Lies Below
S1E1 / 05 Jan 2014
The Mystery of Smith's Cove
S1E2 / 12 Jan 2014
Outdoors: Voices from the Grave
S1E3 / 19 Jan 2014
The Secret of Solomon's Temple
S1E4 / 26 Jan 2014
The Find
S1E5 / 09 Feb 2014
Season 2
Once In, Forever In
S2E1 / 04 Nov 2014
Return to the Money Pit
S2E2 / 11 Nov 2014
The Eight-Pointed Star
S2E3 / 18 Nov 2014
The Breakthrough
S2E4 / 25 Nov 2014
The 90-Foot Stone
S2E5 / 02 Dec 2014
Seven Must Dye
S2E6 / 09 Dec 2014
The Trail of the Templars
S2E7 / 16 Dec 2014
X Marks the Spot
S2E8 / 23 Dec 2014
A Dangerous Dive
S2E9 / 06 Jan 2015
The Big Reveal
S2E10 / 13 Jan 2015
Season 3
The Hole Truth
S3E1 / 10 Nov 2015
Pipe Down
S3E2 / 17 Nov 2015
Outdoors: Time to Dig
S3E3 / 24 Nov 2015
The Overton Stone
S3E4 / 01 Dec 2015
Disappearing Act
S3E5 / 08 Dec 2015
Carved in Stone
S3E6 / 15 Dec 2015
The Missing Peace
S3E7 / 22 Dec 2015
Phantoms of the Deep
S3E8 / 29 Dec 2015
Columbus Day
S3E9 / 05 Jan 2016
Silence in the Dark
S3E10 / 12 Jan 2016
Sword Play
S3E11 / 19 Jan 2016
Voices from Below
S3E12 / 26 Jan 2016
Secrets and Revelations
S3E13 / 02 Feb 2016
Season 4
Going for Broke
S4E1 / 15 Nov 2016
Always Forward
S4E2 / 22 Nov 2016
Swamp Things
S4E3 / 29 Nov 2016
No Stone Unturned
S4E4 / 06 Dec 2016
Bullseye
S4E5 / 13 Dec 2016
Circles in Wood
S4E6 / 20 Dec 2016
All That Glitters
S4E7 / 27 Dec 2016
The Mystery of Samuel Ball
S4E8 / 03 Jan 2017
Echoes from the Deep
S4E9 / 10 Jan 2017
About Face
S4E10 / 17 Jan 2017
Presidential Secrets
S4E11 / 24 Jan 2017
Hyde Park and Go Seek
S4E12 / 31 Jan 2017
One of Seven
S4E13 / 07 Feb 2017
Of Sticks and Stones
S4E14 / 14 Feb 2017
Blood Is Thicker
S4E15 / 21 Feb 2017
A Look Ahead
S4E16 / 28 Feb 2017
Season 5
Forever Family
S5E1 / 07 Nov 2017
Dead Man's Chest
S5E2 / 14 Nov 2017
Obstruction
S5E3 / 21 Nov 2017
Close Call
S5E4 / 28 Nov 2017
Bone Dry
S5E5 / 05 Dec 2017
Remains of the Day
S5E6 / 12 Dec 2017
The Lot Thickens
S5E7 / 19 Dec 2017
Dan's Breakthrough
S5E8 / 02 Jan 2018
The French Connection
S5E9 / 09 Jan 2018
The Signs of a Cross
S5E10 / 16 Jan 2018
Moving Targets
S5E11 / 23 Jan 2018
A Key to the Mystery
S5E12 / 30 Jan 2018
Unhinged
S5E13 / 06 Feb 2018
The Templar Connection
S5E14 / 13 Feb 2018
Steel Trapped
S5E15 / 20 Feb 2018
Seeing Red
S5E16 / 27 Feb 2018
A Family Album
S5E17 / 27 Feb 2018
Amazing Discoveries
S5E18 / 06 Mar 2018
Season 6
Rick's Big Bang Theory
S6E1 / 13 Nov 2018
Gold Rush
S6E2 / 20 Nov 2018
Depth Perception
S6E3 / 27 Nov 2018
A Legacy Revealed
S6E4 / 04 Dec 2018
Homecoming
S6E5 / 11 Dec 2018
Precious Metal
S6E6 / 18 Dec 2018
Rock Solid
S6E7 / 01 Jan 2019
Unearthed
S6E8 / 08 Jan 2019
As Above, So Below
S6E9 / 15 Jan 2019
Fingers Made of Stone
S6E10 / 22 Jan 2019
Wharfs and All
S6E11 / 29 Jan 2019
Slipway When Wet
S6E12 / 05 Feb 2019
The Paper Chase
S6E13 / 12 Feb 2019
Voyage to the Bottom of the Cenote
S6E14 / 26 Feb 2019
Dye Harder
S6E15 / 05 Mar 2019
Detour
S6E16 / 12 Mar 2019
Clue or False?
S6E17 / 19 Mar 2019
Heavy Metal
S6E18 / 26 Mar 2019
Striking Distance
S6E19 / 02 Apr 2019
Short Days and Tall Knights
S6E20 / 09 Apr 2019
Seismic Matters
S6E21 / 16 Apr 2019
Lost and Founding
S6E22 / 30 Apr 2019
Season 7
The Torch Is Passed
S7E1 / 05 Nov 2019
Core Values
S7E2 / 12 Nov 2019
The Eye of the Swamp
S7E3 / 19 Nov 2019
The Lucky Thirteen
S7E4 / 26 Nov 2019
Tunnel Visions
S7E5 / 03 Dec 2019
Closing In
S7E6 / 10 Dec 2019
Things That Go Bump-Out
S7E7 / 17 Dec 2019
Triptych
S7E8 / 07 Jan 2020
An Eye for an Eye
S7E9 / 14 Jan 2020
Gary Strikes Again
S7E10 / 21 Jan 2020
The Eye of the Storm
S7E11 / 28 Jan 2020
Fortified
S7E12 / 04 Feb 2020
Bromancing the Stones
S7E13 / 11 Feb 2020
Burnt Offering
S7E14 / 25 Feb 2020
Surely Templar
S7E15 / 03 Mar 2020
Water Logged
S7E16 / 10 Mar 2020
To Boulderly Go
S7E17 / 17 Mar 2020
The Turning Point
S7E18 / 24 Mar 2020
Lords of the Ring
S7E19 / 31 Mar 2020
Springing the Trap
S7E20 / 07 Apr 2020
A Leaf of Faith
S7E21 / 14 Apr 2020
Marks X the Spot
S7E22 / 21 Apr 2020
Timeline
S7E23 / 28 Apr 2020
Season 8
Remote Control
S8E1 / 10 Nov 2020
The Boys Are Back
S8E2 / 17 Nov 2020
If the Ox Shoes Fit
S8E3 / 24 Nov 2020
Alignment
S8E4 / 01 Dec 2020
The Master Plan
S8E5 / 08 Dec 2020
Seaing is Believing
S8E6 / 15 Dec 2020
Mounding Evidence
S8E7 / 22 Dec 2020
High on the Bog
S8E8 / 29 Dec 2020
Rock, Paper, Serpents
S8E9 / 05 Jan 2021
Connecting the Lots
S8E10 / 12 Jan 2021
Rocky Road
S8E11 / 19 Jan 2021
Digging Their Heels In
S8E12 / 26 Jan 2021
The Fellowship Of The Ringbolt
S8E13 / 09 Feb 2021
A Bend in the Road
S8E14 / 16 Feb 2021
Cask and You Shall Receive
S8E15 / 23 Feb 2021
Leather Bound
S8E16 / 02 Mar 2021
Staking Their Claim
S8E17 / 09 Mar 2021
Cannon Fodder
S8E18 / 16 Mar 2021
A Loose Cannonball
S8E19 / 23 Mar 2021
Fire in the Hole
S8E20 / 30 Mar 2021
Off the Railing
S8E21 / 06 Apr 2021
Be There or T-Square
S8E22 / 13 Apr 2021
Old Wharfs Tale
S8E23 / 20 Apr 2021
Silver Lining
S8E24 / 27 Apr 2021
The Silver Spooner
S8E25 / 04 May 2021
Season 9
Going For Gold
S9E1 / 02 Nov 2021
The Gold Metal
S9E2 / 09 Nov 2021
Stone Roadblock
S9E3 / 16 Nov 2021
Spoils Alert
S9E4 / 23 Nov 2021
Hatching The Plan
S9E5 / 30 Nov 2021
The Root Cause
S9E6 / 07 Dec 2021
It All Adze Up
S9E7 / 14 Dec 2021
Deeper Digs, Bigger Stakes
S9E8 / 21 Dec 2021
The Unusual Suspects
S9E9 / 04 Jan 2022
Chamber of Secrets
S9E10 / 11 Jan 2022
A Boatload of Clues
S9E11 / 18 Jan 2022
The Silver Liner
S9E12 / 25 Jan 2022
Go Big Or Go Home
S9E13 / 01 Feb 2022
Premier of the Dig
S9E14 / 08 Feb 2022
Eyes and Boot in the Ground
S9E15 / 15 Feb 2022
Gold Diggers
S9E16 / 01 Mar 2022
Blast From The Past
S9E17 / 08 Mar 2022
Playing the Dunfield
S9E18 / 15 Mar 2022
Shoal Me the Money
S9E19 / 22 Mar 2022The Hedden Truth
S9E20 / 29 Mar 2022
A Lot of Secrets
S9E21 / 05 Apr 2022
Yes We Can
S9E22 / 12 Apr 2022
Follow the Cobblestone Road
S9E23 / 19 Apr 2022
On the Road
S9E24 / 26 Apr 2022
Treasure Island
S9E25 / 03 May 2022
Season 10
On Their Marks
S10E1 / 15 Nov 2022
Across the Pond
S10E2 / 22 Nov 2022
Bubbling Over
S10E3 / 29 Nov 2022
Wharf and Pieces
S10E4 / 06 Dec 2022
Duc it Out
S10E5 / 13 Dec 2022
Over the Muon
S10E6 / 20 Dec 2022
Norsing Around
S10E7 / 03 Jan 2023
A Lot to Be Desired
S10E8 / 10 Jan 2023
A Damming Clue
S10E9 / 17 Jan 2023
The Blob
S10E10 / 24 Jan 2023
Oh, Well!
S10E11 / 31 Jan 2023
Beware the Blob
S10E12 / 07 Feb 2023
All's Well
S10E13 / 14 Feb 2023
Getting the Shaft
S10E14 / 21 Feb 2023
Wood You Believe It?
S10E15 / 28 Feb 2023
Striking Gold
S10E16 / 07 Mar 2023
A Well of Secrets
S10E17 / 14 Mar 2023
A Quadrilateral Move
S10E18 / 28 Mar 2023
Ramping Up
S10E19 / 04 Apr 2023
A Barrel full of Clues
S10E20 / 11 Apr 2023
Roman Around
S10E21 / 18 Apr 2023
Starry Knights
S10E22 / 25 Apr 2023
The Italian Job
S10E23 / 02 May 2023
Down the Hatch
S10E24 / 09 May 2023
And the Hits Keep Coming
S10E25 / 16 May 2023
Season 11
On the Money
S11E1 / 07 Nov 2023
Heavy Lifting
S11E2 / 14 Nov 2023
Taking Their Shot
S11E3 / 21 Nov 2023
Shear Mystery
S11E4 / 28 Nov 2023
Muon the Horizon
S11E5 / 05 Dec 2023
The Grand Opening
S11E6 / 12 Dec 2023
The Great Flood
S11E7 / 19 Dec 2023
A Void At All Costs
S11E8 / 02 Jan 2024
Filling Cavities
S11E9 / 09 Jan 2024
Chain Reaction
S11E10 / 16 Jan 2024
Plugged Up
S11E11 / 23 Jan 2024
Digging Back In
S11E12 / 30 Jan 2024
Tea Time
S11E13 / 06 Feb 2024
Rick And Mortar
S11E14 / 13 Feb 2024
On Target
S11E15 / 20 Feb 2024
Dark and Stormy
S11E16 / 27 Feb 2024
Piling On
S11E17 / 05 Mar 2024
May The Norse Be With You
S11E18 / 12 Mar 2024
Hi Ho Silver
S11E19 / 19 Mar 2024
Wet and Wild
S11E20 / 26 Mar 2024
Straight as an Arrow
S11E21 / 02 Apr 2024
Abbey Road
S11E22 / 09 Apr 2024
Cone E Island
S11E23 / 16 Apr 2024
Hairy Situation
S11E24 / 23 Apr 2024
Worth The Weight
S11E25 / 30 Apr 2024
Season 12
The New Digs
S12E1 / 12 Nov 2024
Whistle While You Work
S12E2 / 19 Nov 2024
The Saga Continues
S12E3 / 26 Nov 2024
Concrete Evidence
S12E4 / 03 Dec 2024
A Flood of Secrets
S12E5 / 10 Dec 2024
Hide And Seek
S12E6 / 17 Dec 2024
It's All Your Vault
S12E7 / 07 Jan 2025
A Bead On The Target
S12E8 / 14 Jan 2025
Brick By Brick
S12E9 / 21 Jan 2025
Graves Concerns
S12E10 / 28 Jan 2025
Best Caisson Scenario
S12E11 / 04 Feb 2025
Mapping It Out
S12E12 / 11 Feb 2025
Caissons Ho!
S12E13 / 25 Feb 2025
Sinking In
S12E14 / 04 Mar 2025
Channeling the Solution
S12E15 / 11 Mar 2025
Open Sesame
S12E16 / 18 Mar 2025
Boots on the Ground
S12E17 / 25 Mar 2025
If The Shoe Phips
S12E18 / 01 Apr 2025
Barreling Forward
S12E19 / 08 Apr 2025
Just Bead It
S12E20 / 15 Apr 2025
The Solution Solution
S12E21 / 22 Apr 2025
Knight After Knight
S12E22 / 29 Apr 2025
Family Ties
S12E23 / 06 May 2025
Into the Void
S12E24 / 13 May 2025
Uplifting Discoveries
S12E25 / 20 May 2025
Season 13
The Comeback
S13E1 / 04 Nov 2025
Billion Dollar Baby
S13E2 / 11 Nov 2025
Medieval Intentions
S13E3 / 18 Nov 2025
The Smoking Gun
S13E4 / 25 Nov 2025
Keep On Rockin'
S13E5 / 02 Dec 2025
The Heat Is On
S13E6 / 09 Dec 2025
Walk the Line
S13E7 / 16 Dec 2025
Into the Fold
S13E8 / 23 Dec 2025
So Close, Yet Sonar
S13E9 / 30 Dec 2025
Boulder and Wiser
S13E10 / 06 Jan 2026
A Knight's Journey
S13E11 / 13 Jan 2026
A Fort Knight
S13E12 / 20 Jan 2026
Testing Their Metal
S13E13 / 27 Jan 2026
The Shining
S13E14 / 03 Feb 2026
Swamped
S13E15 / 24 Feb 2026
Raising the Stakes
S13E16 / 03 Mar 2026
The Missing Links
S13E17 / 10 Mar 2026
Breaking the Seal
S13E18 / 17 Mar 2026
Axis of Medieval
S13E19 / 24 Mar 2026
The Sands of Time
S13E20 / 31 Mar 2026
A Sacred Symbol
S13E21 / 07 Apr 2026
Road Trip
S13E22 / 14 Apr 2026
Island Hopping
S13E23 / 21 Apr 2026
Overseaing the Dig
S13E24 / 28 Apr 2026
Pure Gold
S13E25 / 05 May 2026
Rick Lagina
Self
Marty Lagina
Self
Robert Clotworthy
Narrator (voice)
