Yorkshire cameraman Sid Perou , who has travelled the globe on caving explorations, penetrates the mysterious world beneath the Pennines, and takes us where television has never been before. It's a world seen previously only by that exclusive and obsessive band of explorers - Britain's 20,000 cavers.
White Scar
White Scar, Ingleton, is a popular ' show-cave ' visited by thousands every year. But beyond the barriers a full scientific exploration is being conducted in galleries the public never see. The story so far from geologist Tony Waltham , the project director.
Film editor MARTIN WINTERTON
Executive producer DOUGLAS b. SMITH