but these are no ordinary caves. Humans first discovered this complex limestone labyrinth some 4,000 years ago beneath the Green River Valley of Edmonson County, Kentucky. To this day, explorers have ...

I just happened to look at an old-fashioned paper map as we wound our way through Kentucky and realized we were just a short jog away from Mammoth Cave. Read More: The Best Small Towns in Kentucky ...

But there’s only one that’s home to the world’s longest cave. That 400-mile wonder can be found under the rolling Southern hills of Kentucky. So, explorers, pack those walking boots.

A journey to the depths of Mammoth Cave to record signatures left by Civil War soldiers. I stood 200 feet below the Kentucky countryside ... where we crowded around a framed 1908 map of Mammoth Cave ...

If all those caves are joined, the whole system would rank behind only Mammoth Cave in Kentucky, which has almost 600 kilometers ... these measurements allow explorers to create detailed cave maps. It ...

A jungle inside a cave ... in Kentucky, with 367 total miles, holds that record. There are deeper caves too—Krubera-Voronja, the “crow’s cave,” plunges 7,188 feet in the western Caucasus ...

According to Dark Sky International, the darkest location in Kentucky for viewing this meteor shower is Mammoth Cave. Checking Dark Sky International's map is a good way to find places nearby that ...

Kentucky is generally associated with derbies, whiskey and fried chicken, but there is much more to explore in the Bluegrass State, from a museum on Corvettes to a sprawling underground cave system.

With almost 300 structures listed in the National Register of Historic Places, 11 bourbon distilleries, and a booming ...

Archaeologists and students digging in Blätterhöhle cave uncovered a 9,000-year-old fireplace (above), flint arrowheads and a bone harpoon. Photo from LWL-AfW Olpe / Michael Baales ...

There are a lot of those blurry lines in western North Carolina ... Chimney Rock was wiped off the map by the same floodwaters that devastated Gerton and Bat Cave. The man responsible for those ...