We Find DISTURBING Operating Room with Unexplainable Tools

RARE 1902 Silver Coin & WEIRD Relics Hiding Somewhere You WON'T Believe

We CANNOT Explain Cryptic Tunnels in Basement from 1909

I Found Out the HARD WAY Where Old Disturbing Doorway Goes

I Fell Into a Sewer Hole (And Walked MILES to Get Out)

Tiny Underground City Built in 1915 Will SHOCK YOU

I Made a CRUCIAL Mistake and Got Lost ALONE with ZERO Energy Left

1935 Underground Portal Made Our Hearts POUND in a BAD WAY

A Journey into Depths of an Abandoned Mine That Will CHANGE YOU

We Gave Up and Quit Exploring Underground After This Happened..

Relentless 2 Year Search Ends with ULTIMATE PAYOFF We Never Expected

We Find BIZZARE Man-Made Passage Hidden JUST 10 feet Under a River

We Endure BRUTAL Tunnel Going DEEP Underground

Approaching HELL'S Doorstep Gave Us a BIG Reason For Concern

Extremely TEMPTING Abandoned Tunnels Revealed

My Filming Partner Goes MISSING & Turns Into Full PANIC Underground

We Find INSANE 1850's Dungeon Under Someone's Basement

3 Dudes Risky Journey Somewhere They ABSOLUTELY Regret

I Heard VOICES Calling Me in the CRAZIEST Place Imaginable

BOTTOMLESS Elevator Shaft Going Under Busy City Street

SHOCKING Tunnel Buried in 100,000 Tons of Sludge

GLOWING Green Room with MASSIVE Machinery Found in Secert Facility

Tunnel under Active Shopping Center Made Us PANIC!

2 Italian Bros Take a WRONG Turn Underground

Taking the BIGGEST Risk Ever to Discover 1800's Bootleg Mine

We Found a Secret Tunnel That CHANGED History

We Search a CRAZY 4 Way Pipeline and Come Out Behind Walmart

Sudden Horrific STENCH Sent Us RUNNING Back Out of This Place

Stupid "Warning" Joke Got INTENSE the Momemt We Stepped Inside

Something Went VERY WRONG Behind Mysterious Trap Door

The Ground OPENED and Dropped Us Into Something SCARY

We Got Tempted to Have a Look.. And It Ended BADLY

I NEVER Should Have Entered These Bunker Tunnels ALONE

Extremely TEMPTING Google Earth Find Did NOT Go as Planned

Tunnel Behind Basement Wall Contains Something ALARMING & Unwelcome

Underwater Tunnel Dried Up & EXPOSED For First Time in YEARS

Highly SUSPICIOUS Access Tunnel Secluded Deep in the Forest

ENDLESS Train Found TRAPPED a Mile Deep Under Small Town

Escape Door Spotted on Google Turns into Heart Pounding Situation

STOLEN?? Park Ride FOUND in the Craziest Place Imaginable

Devastated Neighborhood Left EMPTY with NO Explaination

Chamber Below Interstate Highway Gave Us SERIOUS ANXIETY

NOBODY Knows This Tunnel Goes Under a Famous Sports Arena

Gigantic Entrance in the Woods Drops You Into Something EPIC

EXPLAIN THIS.. Sidways Passages Carved Out Through a Mountain!

SECRET Bridge to Upper UNKNOWN Tunnel Levels Discovered

We Took a Calculated Risk and THIS HAPPENED

Journey Through Astonishing Aqua System Interupted By Startling Discovery | Police Notified

Inviting Tunnel Has BIZZARE & Dangerous Consequences if Entered

We Find Things Under YOUR Home IMPOSSIBLE to Imagine

Unsettling PA Coal Mine with Rooms 500ft Underground

Highly Unsettling Passage Concealed in the Woods | Why Did We Crawl Inside?

TOTAL SHOCK Experienced After Discovering Glorious Piece of History

Intensity on HIGH ALERT after Proceeding into Something We Can't Explain

Risk vs Reward Limit MAXED OUT in Hectic Hunt for Answers

Ominous Doorway in the Depths that Should NEVER Be Approached

Something ATTEMPTS To Stop Me Filming The Bottom of DEEP Earth Stairscase

Wheel House in The Woods Hides Important History and Secret Tunnel

5 Miles Inside City Street Tunnel and STILL No End in Sight

Cryptic Cave Entrance Below 1800's Graveyard