About this programme
Cutting-edge visuals drain the water around Alcatraz to reveal why the prison was so inescapable and find out what the bay's fault lines could mean for San Francisco's future. 7+.
TVGuideUK
Programme listing
Drain Alcatraz has no further showing currently listed. It was last on National Geographic at 22:00 on Sun 8 Nov 2026.
No future channel is currently listed. The latest showing was on National Geographic.
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Cutting-edge visuals drain the water around Alcatraz to reveal why the prison was so inescapable and find out what the bay's fault lines could mean for San Francisco's future. 7+.