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

PHOTOS: Children’s Christmas Shopping Party

Helpful elves: The Children’s Christmas Shopping Party, sponsored by the Ponoka and… Continue reading

REFLECTIONS: They came from Nova Scotia to the pristine countryside near Ponoka

By Mike Rainone for the News The rugged, challenging, and colourful saga… Continue reading

Proposed health care changes would be “devastating” to rural family practice: president of AMA

AHS, AMA and MLA Ron Orr chime in on recent health care announcements

There’s still time to stamp your Passport to Christmas

There are 50 Ponoka businesses participating

Photos: 2019 Ponoka CP Holiday Train stop

Featuring Madeline Merlo and Scott Helman

‘Kind of lacking:’ Injured Bronco wonders why Canada won’t fund spinal surgery

“I think if Canada can step in and advance this program”

Online ‘direct threats’ lead to cancellation of school dance in Blackfalds

Threats resulted from Grade 4 social studies class discussing energy sector

Blackfalds RCMP warn of poor driving conditions on QEII

Vehicles have been involved in collisions and are in the ditch

MP Blaine Calkins: Alberta left behind in Speech from the Throne

Liberal course does nothing for Alberta economy, crime

Would you leave your baby alone to go to the gym? This Canadian dad did

The man identifies just as a divorced dad with a nine-month-old baby

Ponoka RCMP seeking public assistance in locating missing person

Ponoka RCMP is seeking the public’s assistance in locating 35 year old… Continue reading

Lawyer competence includes knowledge of Indigenous-Crown history: B.C. law society

All practising lawyers in B.C. will be required to take a six-hour online course covering these areas

Wealth of Canadians divided along racial lines, says report on income inequality

One interesting finding was that racialized men have a higher employment rate than non-racialized men

Conservatives urge Morneau to deliver ‘urgent’ fall economic update

Morneau says the first thing the Liberals plan to do is bring in their promised tax cut for the middle class

Most Read