Scientist Pete Kelsey and his team have 3D-mapped the entire island of Alcatraz, discovering Civil War secrets, prisoner ...

Built over a desolated island on the coast of San Francisco, the Alcatraz Federal Penitentiary made history as the darkest pit you could hide prisoners from 1934 to 1963. The imposing fortress ...

(CNN) — The future of Alcatraz lies in one man’s hands. In 2023, as sea levels rose around the iconic island in San Francisco Bay, Pete Kelsey — a technologist specializing in 3D data ...