China s heavenly pits : The giant sinkholes that have ancient forests growing within livescience.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from livescience.com Daily Mail and Mail on Sunday newspapers.
From China s Heavenly Pit, which stretches down 2,172 feet, to the Devil s Sinkhole in Texas that is home to three million bats — here are some of the world s deepest known sinkholes.