Cave diving reveals secret world - Earth - The Power of the Planet - BBC
submitted by _angela_
on 05/17/15
1
Dr Iain Stewart cave dives in a cenote to reveal a spectaucular hidden world as he tells the story of the colossal meteor strike 65 million years ago that created them and thereby triggered the extinction of the dinosaurs. Stunning clip taken from ground-breaking BBC series. Watch more high quality videos on the Explore YouTube channel from BBC Worldwide here: www.youtube.com/bbcexplore
