One of Kentucky's most awe-inspiring attractions is Mammoth Cave National Park, which promises unique above and underground adventures ... visiting between Memorial Day and Labor Day, you can ...

The deepest underground laboratory in the United States just finished an overhaul of a wooden mine shaft that transports personnel and supplies nearly a mile underground. A crew inside the Yates Shaft ...

The Underground Railroad, a vast network of people who helped fugitive slaves escape to the North and to Canada, was not run by any single organization or person. Rather, it consisted of many ...