Mammoth Cave is not very popular national park and cave, located in the rolling hills of central Kentucky. The cave is really old one, first authorized in 1926. Around the park there’re no old growth forest or shimmering canyons, no tabletop mases or half-domes.

The park facilities are: – a two story brick hotel with a coffee shop, a restaurant and fast food, some rural cabins and four campgrounds. Above the ground the feeling is mote quaint than outstanding.

So the park is really shinning but out of the light of day. Below are roughly 367 miles of tunnels and chambers that formed on five levels as the water table fell over millions of years. As well as the cavers are still exploring the unknown, adding a mile or two each year to the underground maps.

Most of Mammoth is covered by a layer of shale and sandstone, cap rock that keeps surface water out. So the caves haven’t eroded to nothing and are now largely dry. But they also lack many of the fancy calcite features, like stalactites and stalagmites, that form when water seeps down through limestone for millions of years.

What Mammoth offers as a cave, is size. A few of its premises are tremendous like basketball arenas, and some of its major arteries are as wide and long as the Champs-Élysées. The cave has a dozen tours. Most are relatively easy one- or two-hour walks along the major arteries. The Star Chamber, an enormous room with a high ceiling of natural gypsum that has been blackened over the years by soot from torches and lanterns. The other one is visit to Gothic Avenue, a long, low chamber, which walls and ceilings are thousands of names in soot, as black and clear as when they were written 150 years ago.