As we navigate the maze-like passages, we stumble upon a hidden cave deep within the mine, leading us into an incredible underground world. With ropes guiding the way, we descend into crystal ...

NPCA shares the latest archaeological discovery at Mammoth Cave National Park, which has a pretty fascinating human history, too.

AD travels to Mexico City to tour the iconic Casa Orgánica. Designed by architect Javier Senosiain, his work is dedicated to ...

Deep inside a labyrinthine cave in southwestern France, ancient humans who lived around 30,000 years ago carved horses, mammoths and rhinoceros into the walls, a fabulous prehistoric menagerie ...

There are more than 400 abandoned mines across New Jersey. At one point, they were essential to the state economy.