In this July 7, 2011, file photo, Jim Breeden of the Golden Gate National Parks Conservancy, walks through the dungeons below the main cell house during a night tour on Alcatraz Island in San Francisco. (AP Photo/Eric Risberg, File)

Hidden tunnels found below Alcatraz prison

Archaeologists find buildings and tunnels under prison yard at famed San Francisco pen

Archaeologists confirmed a long-time suspicion of historians and say that famed Alcatraz prison was built over a Civil War-era military fortification.

Researchers found a series of buildings and tunnels under the prison yard of Alcatraz Federal Penitentiary, which once held Al Capone, SFGate reported Tuesday.

A study published last week in “Near Surface Geophysics” said archaeologists used ground-penetrating radar and terrestrial laser scans and historical maps and photographs. They found fully buried structures, ammunition magazines and tunnels.

“This really changes the picture of things,” study author Timothy de Smet, an archaeologist at Binghampton University, told PBS. “They weren’t erased from the island — they are right beneath your feet.”

Archaeologists are now planning more study to discover what else lies just below the surface.

READ MORE: B.C. bolsters protections of heritage, archeological sites

Historians believe workers built over existing structures when the prison was built in the 20th century.

Alcatraz first came to the attention of the U.S. government after it took control of California from Mexico in the 1840s. Its location in San Francisco Bay made it attractive for military fortification purposes.

During the Civil War, Fort Alcatraz was the official military prison for the West Coast.

In the 1930s, the first federal prisoners — deemed by the media to be the worst of the worst — began arriving. The last inmate left in 1963.

The Associated Press

Like us on Facebook and follow us on Twitter

Just Posted

Peewee Hornets sting Kelowna team for Valley of Champions win

Salmon Arm sees four teams compete in Okanagan event

Driver who killed Shuswap motorcyclist receives absolute discharge

Chase family speechless following decision by BC Review Board

Boat sails from trailer to pavement at Sicamous Highway 97A intersection

Alberta resident charged with transporting an insecure load

Collision with hydro pole cuts power to thousands in the Shuswap

Minor injuries to the driver were reported; power was restored by the following morning

Man arrested in Kelowna following Shuswap vehicle thefts, pursuit

Suspect wanted in Alberta allegdly also stole several vehicles near Sicamous over the weekend

VIDEO: B.C. MLA Michelle Stilwell takes first steps in nearly 30 years

‘It actually felt like walking. It’s been 27 years… but it felt realistic to me’

Firefighters have doused a Peachland house fire

Fire crews are still on scene investigating the cause of the BBQ which made its way to the home

False report of dead body leads police to sex dolls at Manning Park

Princeton RCMP breathed a sigh of relief, momentarily, when they discovered a… Continue reading

Ironman returns to Okanagan after seven-year absence

Subaru Ironman Canada is coming back to Penticton in 2020

Grand Forks fire chief found to have bullied, harassed volunteer firefighter: report

WorkSafeBC, third-party human resources investigation looking into allegations complete

Special memorial service to say goodbye to murdered Kelowna teen

A memorial service and celebratio of life was held Tuesday for murdered teen Elijah-Iain Beauregard

Okanagan College campus flies Syilx flag

The Okanagan Nation Alliance flag was raised at a ceremony at Vernon campus on July 16

Dog recovering after being drenched in hot coffee, B.C. man charged

Man was taken into custody, charged, and released pending a court date

Silverbacks add experienced defence, forward to roster

Trades made with emphasis on adding veteran players to 2019-20 lineup

Most Read