Couple Dug for New Hot Tub and Hit a Massive Hole, Went Inside and Turned Pale! - Video

A Michigan couple tore an old, broken hot tub out of the middle of their living room and uncovered a manhole-sized hole cut straight through the concrete floor beneath it. The opening dropped down so far that a flashlight beam disappeared into the dark before hitting anything at all, and what eventually came back up at the end of that beam was water. Dark, motionless, and somehow still being fed from somewhere outside the house.

Trevor and Hayley Gilmartin had bought the place four years earlier as a fixer-upper on the western bank of the St. Clair River, with no idea anything was hidden under their floor. The jacuzzi never worked. The water they put in it always vanished without a trace. And when they finally ripped it out in March 2024, they found out where it had been going. A 20-foot shaft, a flooded concrete chamber the size of a small house, and at the far end of it, a wall of bolted wooden planks sealing off whatever lies beyond.

They tried to pump the room dry. Eight hours later, the water hadn't dropped a single inch. Then they went diving in the river behind their house and found the other end of the pipe. A metal grate set into the riverbed, lined up almost perfectly with the wooden wall no one has ever opened.

Why was a wartime bunker built beneath this house? What is the wooden wall actually keeping in, or out? And why are several of the Gilmartins' neighbors quietly sitting on top of identical chambers along the same stretch of river? Watch the full story to find out.

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???? Sources:

Newsweek, "Couple Renovate Hot Tub. Find Secret Room With Bolted Door Hidden 20ft Below"
https://www.newsweek.com/couple-renovate-hot-tub-find-secret-room-bolted-door-hidden-20ft-below-1892536

CBS Detroit, "What's underneath? Michigan couple discovers a 20-foot hole inside their home"
https://www.cbsnews.com/detroit/news/michigan-home-goes-viral-for-hidden-tunnel/

New York Post / Jam Press, "Couple discovers creepy, 100-year-old room under jacuzzi and its shocking secret use"
https://www.yahoo.com/lifestyle/couple-discovers-creepy-100-old-152736599.html

What's The Jam, original Hayley Gilmartin interview
https://whatsthejam.com/super-viral/couple-discover-100-year-old-room-under-jacuzzi-used-as-a-secret-tunnel/

Unilad, "Eerie 100-year-old tunnel discovered beneath couple's home had a shocking use"
https://www.unilad.com/news/us-news/michigan-tunnel-canada-lake-huron-250779-20240605

WGRT, "Michigan Couple Discovers Prohibition-Era Bootleggers' Tunnel Beneath Home"
https://wgrt.com/michigan-couple-discovers-prohibition-era-bootleggers-tunnel-beneath-home/

99WFMK, "Secret Tunnel & Room Found Underneath a Home in Marysville, Michigan"
https://99wfmk.com/secret-tunnel-under-house-marysville/

Hayley Gilmartin (@hayleyg099), original TikTok of the discovery, April 13, 2024
https://www.tiktok.com/@hayleyg099/video/7357558814935141678

Hayley Gilmartin (@hayleyg099), follow-up TikTok with new footage and learnings
https://www.tiktok.com/@hayleyg099/video/7383556155819248939

Port Huron Times Herald reporting (Gannett), Bob Ankrapp 1979 St. Clair County Independent Press archival profile of Phillip Tuttle and the Dow Magnesium Plant pumping station origin
https://www.thetimesherald.com/