A harrowing entrapment and equally challenging rescue mission are told in the linked story. Barrie firefighters are said to have hung upside down as they drilled adequate passage to release a man from what might have become his grave in the Singhampton conservation area near Barrie. The 30-year-old is in good condition having been handed food and water by rescuers. He is now in hospital. But he was trapped 12-metres down in the cavern for several hours before other hikers heard his cries at about 8.30 last night and for help. Toronto Star