Hidden beneath the Guadalupe Mountains, these caverns are a natural marvel, with over 119 caves formed from limestone. The ...

Some 2,000 years ago Indians went deep into the great cavern in Kentucky to mine gypsum, leaving behind them many traces of a society that was just beginning to develop agriculture ...

The Natural Bridge Caverns are home to the biggest commercial cave system in Texas. Above-ground adventures include zip lining, a rope course, a maze, gem mining, shopping and dining. But the ...