Our wonderment seemed to match the fittingly named Cathedral Domes’ dimensions: 150 feet up and 140 feet long. In Mammoth Cave there are far fewer stalactites, stalagmites and other dripstone ...

Inside the aptly named Mammoth Cave, you’ll find tube-like passageways, great rooms with sparkling walls, slot canyons, huge domes, and even a dripstone that resembles a frozen waterfall.