A cave diver has dropped through the small round opening to the cavern of 'Jug Hole' cave at Itchetucknee Springs State Park, Florida. At the right time of day, the sun's rays shine through and create 'spotlight' to show off the diver. 'Jug Hole' is one of hundreds of springs and sinkholes that permit divers to explore miles and miles of underwater tunnels that form part of the drinking water supply for 10 million people in the Southeast.