Beat the summer heat by going underground. Arizona is home to famous caves, like Kartchner Caverns. Here are 5 of the best ...

The green water and moss-draped walls create a scene straight out of an adventure novel. Photo credit: Olga Matsarskaya Have you ever dreamed of paddling into a cave that glows green like a giant ...

Arizona Science Center’s newest exhibit transforms 39 miles of tape into tunnels, caves, and slides, turning the science of ...

These towers were built to be the tallest, most luxurious, and most powerful symbols of wealth on Earth, but greed, collapsed ...

Florence stands as one of Arizona’s most historic small towns. Walking through downtown feels like traveling to another era.

There’s something humbling about descending into a place where each crystal formation grew at a rate you cannot even comprehend. Deep below the desert surface, we find ourselves in a cathedral of ...

U.S. President Donald Trump suggests that Iran's oil infrastructure could suffer colossal damage due to a reduction in oil production. "They (Iran) have a problem because the situation is extremely ...

While the vast majority of our nation’s natural wonders exist above ground, a select few parks, forests, and national monuments feature a hidden basement level. Mammoth Cave National Park, for example ...