Documentary examining the underlying forces behind sinkholes, which can swallow up streets, rip up motorways, destroy forests and even drag unfortunate bystanders to their deaths <br /> <br />Part 1: Buried Underground <br />In Ripon, North Yorkshire UK, a woman recalls how a huge hole opened up next to her house more than 60 feet wide and 30 feet deep. In Florida, a sink hole appeared directly below a property, sucking a resident deep underground in the process.
