Scientist Pete Kelsey and his team have 3D-mapped the entire island of Alcatraz, discovering Civil War secrets, prisoner escape routes – and looking at ways to preserve the island for the future.

the popularity of Alcatraz reflects our fascination with freedom. The mundane liberties of daily life look more valuable than ever when considered while standing amid the forbidding cells ...

He has formed his own mental map of the three-tiered cellblocks ... by Clint Eastwood in the 1979 movie Escape from Alcatraz), dug in their cells to enlarge the ventilation grates.

Alcatraz Federal Penitentiary and the island it stands on can be seen from above. The infamous prison closed on March 21, 1963, after 29 years of operation. The main cell block that once housed ...

Armed with a combination of hand-held cameras and drones, Kelsey and his team set out to 3D map the ... sleeping in cells in the notorious D-block where, historically, some of Alcatraz’s most ...