Draining Alcatraz:..

Channel 5

Friday 16 August 2019  20:00 - 21:00 (60 mins)
...The Impossible Escape. Visual effects 'drain' the waters around the prison of Alcatraz. The sea floor reveals scars left by earthquakes, and may help predict when the next 'big one' will stri...[S]

Draining Alcatraz:.. may be available on playback
Draining Alcatraz:.. (Channel 5) Friday 16 August 2019 20:00 - 21:00