Braidwood is a city in Will County, Illinois, United States, approximately 53 miles (85 km) southwest of Chicago and 18 miles (29 km) south of Joliet. The population was 5,203 at the 2000 census. The Braidwood Nuclear Generating Station, a nuclear power plant currently owned by Exelon Corporation, is also located in the area (although the plant's address is actually in the nearby town of Braceville).
The Son Doong Cave in Vietnam is the biggest cave in the world. It's over 5.5 miles long, has a jungle and river, and could fit a 40-story skyscraper within its walls. But nobody knew any of that until about six years ago.
Call of the AbyssâWorld's Deepest Cave. The Big Cascade, the largest pit in Krubera Cave, plunges 499 feet (152 meters), but spans less than a tenth of the distance to the cave's unknown bottom. Descending into Krubera, in the country of Georgia, one team member said, was like climbing an inverted Mount Everest..