The Cueva del Indio is a natural cavern used by indigenous Taino people who left behind a series of paintings on the cave walls. The artwork is estimated to have been made sometime between 1200 ...

“Natural gas storage in underground cavities ... the minimum thickness of the hanging wall in a salt cavern should be 75% of the cavern diameter, while for the foot wall this percentage is ...

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 ...