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Horizon

2013-2014

Episode 6: Swallowed by a Sinkhole

Duration: 59 minutes

on BBC Four HD

Science documentary series. Professor Iain Stewart travels to Florida to investigate sinkholes, and why the geology of this state makes it the sinkhole capital of the world. Show more

BBC Four HD

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BBC Four reflects arts, music and culture with an ambitious range of intellectually and culturally enriching programmes, taking an expert and in-depth approach to its subjects.