SAN FRANCISCO (AP) — 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 ...
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Why There Are Hidden Tunnels Beneath Alcatraz Island
Alcatraz is famous as a brutal federal prison, but this video traces how the island first became a Civil War era fortress and military prison, then slowly transformed through decades of overcrowding ...
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